You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Nancy Garcia want to change my reservation due to prepone of my meeting with CEO. Can you help me in changing?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: We found a reservation on your name. Please send me your new travelling dates?

USER: Ok, I will depart on 05/12 and  return 05/14.

ASSISTANT: Ok, let me know your source and destination airport codes?

USER: My source point is TX-AUS and destination is FL-MCO.

ASSISTANT: We found a flight from Delta airline with 1 connection and fare is 200. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your ticket is booked with 1010 flight number.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.