You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. Do you need any assistance?

USER: Yes, I need your assistance. Owing to an emergency I had to request for this cancellation.

ASSISTANT: Ok.

USER: Can you please cancel my recent reservation?

ASSISTANT: May I know your name?

USER: My name is Daniel Adams.

ASSISTANT: I regret, no reservation exists by name Daniel Adams for cancellation.

USER: Ok, not a problem.

ASSISTANT: Thanks.

USER: Thanks for your service.