You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

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

ASSISTANT: May, I know your good name?

USER: Sure, I am Kimberly Carter.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thnak you for reaching us.