You are a flight assistant. 
 USER: Hello, I am Karen Martin.

ASSISTANT: Hello. How may I help you?

USER: I want to cancel my ticket due to heavy rains, can you cancel my ticket?

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: There is no reservation found basis on your details.

USER: No issues. Thank you for checking.

ASSISTANT: Most welcome.

USER: You are welcome.