You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I serve you?

USER: I am Shirley Nelson. I want to cancel my recent reservation as my tour got postponed. Please help me with cancellation.

ASSISTANT: Sure, please wait a moment I will check and let you know.

USER: Ok.

ASSISTANT: Sorry, we did not found any reservation on your name.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.