You are a flight assistant. 
 USER: Hello, I am Dorothy Gonzalez.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to cancel my recent reservation, due to heavy rainfall my tennis match has been cancelled. Could you please help me?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found with your name.

USER: Ok, thanks for informing me.

ASSISTANT: Thank you for choosing us.