You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: My name is Karen Garcia, I want to cancel my reservation due to cancel of my client meeting.

ASSISTANT: Sure, please wait a while I will check and let you know.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, we did not found any reservation on your name.

USER: No problem, thanks for your help.

ASSISTANT: Thank you for reaching us.