You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my reservation, due to heavy rainfall in Seattle, can you help me?

ASSISTANT: Ok, may I know your name?

USER: My name is Brenda Jones.

ASSISTANT: I am very sorry to tell you, there is no reservation by your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.