You are a flight assistant. 
 USER: Hello, I am Christopher Nelson.

ASSISTANT: Hello, how can I assist you today?

USER: Due to emergency meeting, I want to cancel my reservation. Can you help me with it?

ASSISTANT: Sure, I am here to make your work easy. Please wait for a few minutes.

USER: OK.

ASSISTANT: Thank you for waiting, we did not find any reservation on your name in our database.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for consulting us.