You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Owing to an emergency, I want to change my reservation. Can you please help me with that?

ASSISTANT: Sure, we can help with that.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: I am Michael Baker.

ASSISTANT: Please hold a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found with the given name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.