You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Amy Nelson.

ASSISTANT: Amy, how may I guide you?

USER: I would like to attend an event in SFO, can you book the flight ticket from BOS?

ASSISTANT: Sure Amy, I am here to help you with that. When you are willing to travel?

USER: I would like to take-off the flight on 06/12 and recur will be on 06/14.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Amy, sorry to inform that no flight are available on your prefer dates.

USER: That's ok, no problem. Thank you for your information.

ASSISTANT: You are welcome.