You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

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

ASSISTANT: May, I know your good name?

USER: I am Gregory Walker.

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

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.