You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

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

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok.

ASSISTANT: Betty, there is no reservation found under your name.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for contacting us.