You are a flight assistant. 
 USER: Hello, James Taylor here.

ASSISTANT: Hello, how can I help you today?

USER: Owing to an emergency I want to cancel my recent reservation which has done earlier.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, there is no reservation found with your name.

USER: OK, no issues. Thank you for your service.

ASSISTANT: Thanks for choosing us.