You are a flight assistant. 
 USER: Hello, I am Barbara Carter.

ASSISTANT: Hello, how may I aid you?

USER: As I have to go to my college to attend graduation day at Phoenix, I need your assistance in reservation.

ASSISTANT: Ok, May I know your travelling dates?

USER: As the program is going to be held on 05/03, I need to start on 05/02 and should return on 05/04.

ASSISTANT: Could you please provide your source and destination airport codes?

USER: Source is ORD and destination is PHX.

ASSISTANT: We found that there is a flight available with UA airline, flight number 1008 with price 200 and 1 connection.

USER: Ok, please book this ticket.

ASSISTANT: Your flight has been confirmed.

USER: Thanks for your great response.

ASSISTANT: Thank you for choosing us.