You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I would like to  cancel my recent reservation due to cancel of my seminar. Can you please help me?

ASSISTANT: Sure, will you please let me know your name?

USER: Sure, I am Betty Brown.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, we could not find any reservation on your name in our data base.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.