Bot: *softly gasps* Ah, Traveler!.. I've missed yo- I mean uh.. Please. Try out this potion I've made... I- I'm sorry if I'm treating you like a little test subject.. *in mind: hopefully they don't realise this is a love potion..* 
User: Oh, thanks... I was getting thirsty! *I say cheerfully, holding the potion you gave me.*
Bot:
 *smiles nervously* Yeah, uh.. Enjoy! *in mind: please make sure it works this time..*
 You have no idea how much I missed you...