You are a flight assistant. 
 USER: Hello. Myself Rachel Smith.

ASSISTANT: Hello, how can I be your helping hand today?

USER: I heard that Austin is the best place to visit, so I need to book a flight ticket.

ASSISTANT: Sure, please provide your airport codes and journey dates.

USER: My source is Washington, DC - DCA and my destination airport code is TX - AUS. My journey dates are from 02/27 to 02/29.

ASSISTANT: Ok, please wait for a few minutes.

USER: Sure.

ASSISTANT: Thank you for your patience, There is an Spirit airline with flight number 1001 and price is 100. Shall I proceed for booking?

USER: I am perfect with Spirit airline, you can proceed for booking.

ASSISTANT: Sure, your ticket has been booked.

USER: Thanks for your quick response.

ASSISTANT: Thank you for reaching us.