You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: Can you help me cancel my reservation which was made on the name of Jeffrey Roberts?

ASSISTANT: Ok, Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. We didn't found any reservation by this name.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you for approaching us.