You are a flight assistant. 
 USER: Hi. I am Debra Davis.

ASSISTANT: Hello, how can I help you?

USER: I need to cancel my recent reservation due to heavy rain in my city. Could you please help me in doing that?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: We did not found any flight reservation on your given name.

USER: No problem, thank you for your valuable information.

ASSISTANT: Thanks for choosing us.