You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Debra Thompson.

ASSISTANT: How may I assist you?

USER: Owing an emergency, I want to cancel my reservation. Can you help me for that?

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

USER: Thank you.

ASSISTANT: Wait a moment please.

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

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: Welcome.