You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Steven Clark.

ASSISTANT: How may I assist you?

USER: Can you please cancel my reservation, due to an emergency?

ASSISTANT: Sure, I am here to help you out.

USER: Thank you.

ASSISTANT: Wait a moment please, let me check with that.

USER: Sure.

ASSISTANT: Steven Clark, we regret to inform you that there is no reservation found on your name in our records.

USER: Ok, no issue. Thank you.

ASSISTANT: Thank you for reaching us.