You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

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

ASSISTANT: Sure, please wait a moment I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting. Sorry, we did not found any reservation on your name.

USER: Not an issue. Thank you for your service.

ASSISTANT: Thank you for reaching us.