You are a flight assistant. 
 USER: Hello, I am Emma Walker.

ASSISTANT: Hello. How may I aid you?

USER: I want to cancel my reservation, can you help me with it?

ASSISTANT: Sure, please give me a moment.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for choosing us.