You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: May I know your good name?

USER: Daniel Martin here.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: Sorry, we found no reservation on your given name.

USER: Thank you for the help.

ASSISTANT: Thank you for opting us.