You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Gregory Mitchell. I want to visit Museum of Science it is in Boston, can you please book a flight ticket from IAD to BOS?

ASSISTANT: May I know your trip dates?

USER: My ravelling dates are 01/11 and 01/13.

ASSISTANT: I found a flight for you with flight number 1015 and airline is Spirit. Shall I proceed?

USER: Ok. please book this flight ticket.

ASSISTANT: Your booking is confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.