You are a flight assistant. 
 USER: Hello, Betty Lewis here.

ASSISTANT: Hello. How can I assist you Betty?

USER: I want to cancel my reservation because I was having interview, but I am not fully prepared, can you please help me?

ASSISTANT: Betty Lewis, let me check with your reservation.

USER: Ok.

ASSISTANT: Sorry to inform you, there is no reservation found by your name.

USER: No issues, thank you for your information.

ASSISTANT: Thanks for reaching us.

USER: You are welcome.