You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Ryan Lopez. I am planning to book a ticket from IAD. Can you please book a ticket for me?

ASSISTANT: Sure, kindly mention your travel dates?

USER: My travelling dates are 09/17 and return back on 09/19.

ASSISTANT: May I know your source airport code?

USER: My destination airport code is PHX.

ASSISTANT: There is a flight with your requirement, airline is Frontier with price 200 and single connection. Shall I proceed with booking?

USER: Yes, you can proceed the booking.

ASSISTANT: Your booking is done and flight number is 1005.

USER: Thank you for your help.

ASSISTANT: Thanks for reaching us, have a good day.