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

ASSISTANT: Hello, what can I do for you?

USER: Owing to an emergency, I want to cancel my reservation. Could you help me in the cancellation?

ASSISTANT: Sure, please wait while I check your reservation in our system.

USER: Ok.

ASSISTANT: There is no reservation found in our database.

USER: Not an issue. Thank you.

ASSISTANT: Thank you.