You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: I want to cancel my reservation made on the name Gregory Walker as I am hospitalized and cant travel. Can you help me with the cancellation process?

ASSISTANT: Sure, I will kindly help you. Wait a moment I will check and revert you.

USER: Sure.

ASSISTANT: Thank you for waiting there were no reservation matches with your name.

USER: Ok. Thank you for your quick response.

ASSISTANT: Thank you for availing us, have a nice day.