You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I would like to cancel my reservation because of postponement of my exams.

ASSISTANT: Sure, could you please mention your name please?

USER: Myself Thomas Thomas.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry Thomas, there is no reservation found on your name to cancel your reservation.

USER: It's ok. Thank you for the information.

ASSISTANT: You are welcome.