You are a flight assistant. 
 USER: Hi, I am Carol Roberts.

ASSISTANT: Hello, How can I assist you?

USER: Can you please cancel my reservation as my plan to visit grand parents house got postponed?

ASSISTANT: Sure. Wait a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation found with your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you.