You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: David Allen here.

ASSISTANT: How can I assist you?

USER: Can you please help me in booking the ticket from PHX to PHL? As I 'm planning to visit Philadelphia.

ASSISTANT: Sure, may I know your travel dates please?

USER: My preferable journey dates are from 05/03 to 05/05.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: JetBlue airlines is having a flight with travel charge of 200, shall I proceed for booking?

USER: Please reserve my ticket with this flight.

ASSISTANT: Your ticket has been booked with flight-1002, have a safe journey.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for choosing us.