You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Walker.

ASSISTANT: Kathleen Walker, how can I aid you today?

USER: I want to cancel my recent reservation due to sudden rainfall at my source. Can you please help me with this?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Hold on for a moment. Let me check.

USER: Sure.

ASSISTANT: Sorry Kathleen Walker, there are no flights reserved on your given name formerly.

USER: Ok, no problem. Than you for checking.

ASSISTANT: Welcome, thank your for choosing us. Have a great day.