You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

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

ASSISTANT: Sure, may I know your name?

USER: My name is Dorothy Smith.

ASSISTANT: Ok, Please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting, there is no active reservation on your name.

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

ASSISTANT: Thank you.