You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you at this moment?

USER: Please help me to change my recent reservation.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please let me know your name to check your reservation status.

USER: I am Nancy Allen.

ASSISTANT: We found a reservation on your name, can you please forward your journey dates?

USER: My travel dates are from Dec, 04 to Dec, 06.

ASSISTANT: Kindly assign your airport codes?

USER: My source airport code is PHL and destination airport code is IAH.

ASSISTANT: Please mention your connection limit.

USER: I need a single connecting flight.

ASSISTANT: Do you have any more requirements?

USER: I prefer normal-cost airlines to fly.

ASSISTANT: Ok. please wait for a while. We found a Delta airlines with connecting flight matching your essentials, price is 200 in economy class.

USER: Please proceed for booking.

ASSISTANT: Your ticket has been reserved with 1009 flight number.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.