You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Shirley Thompson.

ASSISTANT: How may I help you today?

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

ASSISTANT: Sure, I am here to help you with that. Ok, wait for a minute.

USER: Thank you. I will wait.

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

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

ASSISTANT: Thank you for reaching us.

USER: Welcome.