You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Jessica Hill. I have to attend a Music Concert at Phoenix, could you please help me with booking a flight ticket from DEN to PHX?

ASSISTANT: Sure, I am happy to aid you in flight ticket booking process. Can you please let me know your preferable travel dates for booking flight ticket?

USER: I would like to take off on 08/19 and return on 08/21.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: There is a connecting flight 1022 of Delta airlines, shall I proceed?

USER: Please confirm the booking if the ticket fare 200 or less.

ASSISTANT: Your ticket has been booked.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: You are welcome.