You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Elizabeth Smith, want to travel from DCA to PHX. Please help me in booking my ticket.

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: Sure, my travelling dates are from 01/15 to 01/17.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: AA airlines is having a flight on that route with travel charge of 300, shall I proceed for booking?

USER: Please proceed.

ASSISTANT: I have successfully booked your ticket with flight-1028, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.