You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Lopez.

ASSISTANT: How can I assist you?

USER: I want to cancel my reservation, due to heavy rainfall in Seattle.

ASSISTANT: Sure, please give me a minute.

USER: Ok.

ASSISTANT: Sorry Lopez, there is no reservation available on your name.

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

ASSISTANT: You are welcome.