You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Donna Wilson.

ASSISTANT: How may I assist you?

USER: I want to book a ticket from IAD to PHX, can you help me?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My travel dates are Nov 11 and Nov 13.

ASSISTANT: How much you can afford for airfare?

USER: My price limit is 500.

ASSISTANT: Wait a moment please, let me check with that.

USER: Sure.

ASSISTANT: AA airlines is available in your route with the ticket fare of 100 in economy class, shall I proceed with the booking?

USER: You can book it.

ASSISTANT: Your ticket is booked with the flight-1015.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.