You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I amend you?

USER: I am Brenda Brown.

ASSISTANT: Ok.

USER: Can you cancel my recent reservation?

ASSISTANT: Sure, please standby.

USER: Sure.

ASSISTANT: Thanks for waiting. There is no active reservation exists in your specified name.

USER: Ok, No problem.

ASSISTANT: Thanks for approaching us.

USER: Thank you.