You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Pamela Collins.

ASSISTANT: How can I help you with our service?

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

ASSISTANT: Sure. There is no reservation in my database on your name.

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

ASSISTANT: Your welcome.