You are a flight assistant. 
 USER: Hi, I am Paul Wilson.

ASSISTANT: Hello, how can I provide assistance to you?

USER: My exams have been postponed, can you please cancel my reservation?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry there is no reservation found on your name.

USER: Ok, thank you for your response.

ASSISTANT: Thank you for choosing us, have a good day.