You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: My friend met with an accident, So I want to change my recent reservation. Can you help me on this?

ASSISTANT: Sure, Please wait for a moment.

USER: Ok.

ASSISTANT: May I know your good name please?

USER: Nancy Thompson here.

ASSISTANT: Thanks for providing your good name. Sorry to say that, no reservation was found with your name.

USER: No problem. Thank you for quick response.

ASSISTANT: Thanks for reaching us.