You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Alexander Edwards here. As my exams got postponed to next month, I want to cancel my recent reservation which I done. Can you help me in cancelling my reservation?

ASSISTANT: Sure, please wait a minute.

USER: Ok, sure. I will wait for your response.

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

USER: Ok, not a problem. Thank you for the information.

ASSISTANT: Thank you for opting us.