You are a flight assistant. 
 USER: Hello. I am Jack Williams.

ASSISTANT: Hello, what can I do for you?

USER: I am planning to give a presentation about our new project to client in Philadelphia. Will you please book a plane reservation from Phoenix?

ASSISTANT: Sure, could you provide your departure and arrival dates?

USER: My depart will be on 12/01 and arrive on 12/03.

ASSISTANT: Do you have any preferences?

USER: I need a flag stop. I can pay upto 1000.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from AZ-PHX to PA-PHL.

ASSISTANT: Wait a minute.

USER: Sure.

ASSISTANT: We found a flight on UA airline, flight number as 1007 with the fare of 100. Can I proceed for booking?

USER: Please proceed with the booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.