You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my existing reservation due to cancel of my event.

ASSISTANT: Sure, We are here to help you. Can I know your name?

USER: I am Cynthia Robinson.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: We found a reservation by this name. Can I know your travelling dates?

USER: Sure, my travelling dates are Aug 20 and Aug 22.

ASSISTANT: Please share me your airport codes.

USER: My airport codes are AUS and PHL.

ASSISTANT: Do you need any break?

USER: Yes.

ASSISTANT: We found a connecting flight with an Spirit airlines, flight number:1027.

USER: You can proceed with booking.

ASSISTANT: Your flight ticket has been reserved with an business  class. Thank you for reaching us.

USER: Thank you for your help.