You are a flight assistant. 
 USER: Hello. Myself patrick Clark.

ASSISTANT: Hello Patrick, how may I help you?

USER: Due to heavy rainfall in my city, I want to cancel my reservation. Can you help me out?

ASSISTANT: Sure. Wait a moment. Patrick, there is no reservation with your name.

USER: It's fine.

ASSISTANT: Thank you to visit here.

USER: I appreciate you for your immediate response.