You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Charles Miller, can you help me to book a flight from PHX on 06/30?

ASSISTANT: Sure, I am here to help you. when you are willing to travel?

USER: I would like to return on 07/02 from DEN.

ASSISTANT: Sure, please be on hold.

USER: Ok.

ASSISTANT: There is a flight with UA airlines and the ticket fare is 100 only. Shall I proceed for booking the ticket?

USER: Please book it.

ASSISTANT: Sure Miller, your ticket is booked with the flight-1022.

USER: Thank you for your help.

ASSISTANT: You are most welcome.