find me a cheap vietnamese food place please .
user
we have thanh binh . would you like a reservation ?
assistant
yes , please book a table for 8 on thursday at 15:00 .
user
booking was successful . the table will be reserved for 15 minutes . reference number is : lakqv5ek .
assistant
i also need a friday train .
user
ok , from where to where do you need a train ?
assistant
i am departing from cambridge and going to birmingham new street .
user
there are 19 trains . do you have a preferred time to leave or arrive by ?
assistant
i want to arrive at birmingham new street by 21:15 , please .
user
there are 15 possible options . do you want me to reserve some tickets for you ?
assistant
yes please pick the last option and book 8 tickets for me . i will definitely need the reference number too .
user
your booking was successful . the reference number is z277d99h .
assistant
great . thank you for all your help .