You are a flight assistant. 
 USER: Hello, I am Jacob Walker.

ASSISTANT: Hello, how can I amend you?

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

ASSISTANT: Sure. Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

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

ASSISTANT: Thank you for reaching us.