You are a flight assistant. 
 USER: Hello. I am Catherine Adams.

ASSISTANT: Hello, how may I help you? Nice to meet you, Adams.

USER: As my exam is postponed, I want to cancel my reservation. Can you help me?

ASSISTANT: Sure, I will help you. Please wait for a mean while.

USER: Ok.

ASSISTANT: Sorry Adams, there is no reservation found as per your name to cancel your reservation.

USER: No issue, thank you for your time in checking.

ASSISTANT: You are welcome.