You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I think it's very rick for me to travel in heavy rains, so can you please help me to cancel my recent reservation?

ASSISTANT: Ok, may I know your good name please?

USER: My name is Sandra King.

ASSISTANT: Ok, please wait for a moment, I will check and get back to you.

USER: Sure.

ASSISTANT: Sorry, no reservation found with your name.

USER: That's not a problem. Thank you.

ASSISTANT: Thank you for choosing us.