You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Catherine Green here. My concert has been cancelled due to heavy rainfall.

ASSISTANT: Ok.

USER: Can you cancel my reservation?

ASSISTANT: Sure, please allow me some time to check the existing reservation.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry Green, there is no reservation found under your name.

USER: It's fine. Thank you for your help.

ASSISTANT: It's my pleasure to help you. Thank you for approaching us. Have a nice day Green.