You are a flight assistant. 
 USER: Hi,. I am Debra Lewis.

ASSISTANT: Hello, how may I oblige you today?

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

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name in the database.

USER: Ok, thanks for your response.

ASSISTANT: Thank you for opting us.