You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my recent reservation  due to the sudden postpone of my exams. Can you help me with that?

ASSISTANT: Sure, may I know your good name?

USER: I am Rebecca Gonzalez.

ASSISTANT: Please wait for a moment. I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us.

USER: Thank you for your help.