You are a flight assistant. 
 USER: Hi, I am Amy Walker.

ASSISTANT: Hello, how can I assist you?

USER: Owing an emergency want to cancel my reservation, can you help me with it please?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

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

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for choosing us.