You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Is this flight booking agency?

ASSISTANT: How can I assist you?

USER: I am Elizabeth Young. I want to cancel my reservation, because I got to know that the service of Delta airlines is not good.

ASSISTANT: Sure, I will help you with that. Give me a minute.

USER: Sure.

ASSISTANT: I am sorry to say that there is no reservation found on your name.

USER: It's ok, thanks for your information.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.