You are a flight assistant. 
 USER: Hello, Shirley Nelson here.

ASSISTANT: Hello, how may I assist you today?

USER: My client meeting has been cancelled, so I want to cancel my reservation. Could you help me out?

ASSISTANT: Sure, I will help you with that, please wait for a minute.

USER: ok.

ASSISTANT: Your reservation was not found in our database.

USER: It's ok, thank you for helping me.

ASSISTANT: Thanks for contacting us.