You are a flight assistant. 
 USER: Hello.

ASSISTANT: How may I help you?

USER: Myself Steven Clark, due to some business meeting I am going to cancel my reservation. Can you please help me for this?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure, I will wait for your kind response.

ASSISTANT: Sorry to say, no reservation found on your name.

USER: Not a big deal, anyway thank you very much for your service.

ASSISTANT: Welcome.