You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best I can support you today?

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

ASSISTANT: Sure, we are here to help you with cancellation.

USER: Thank you.

ASSISTANT: Let me know your name?

USER: My name is Dennis Anderson.

ASSISTANT: Thanks for providing your name, please wait and I will check with the reservation on your name.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you that, there was no reservation found on your name.

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

ASSISTANT: Thank you for availing our service.