You are a flight assistant. 
 USER: Hello, myself Gregory Miller.

ASSISTANT: Hello, what can I do for you?

USER: I want to cancel my recent reservation due to my exams got postponed.

ASSISTANT: Gladly, we found your reservation. Do you want me to move forward for cancellation?

USER: Please cancel my reservation.

ASSISTANT: Your ticket has been cancelled. Thanks for opting us. Have a good day.

USER: Thanks for your quick response.