You are a flight assistant. 
 USER: Hello. I am Mary Lopez.

ASSISTANT: Hello, how may I help you today?

USER: Due to bad weather condition in my city, I would like to cancel my reservation. Can you help me?

ASSISTANT: Sure, I can help you. Please wait for a while. Sorry to inform you, there is no reservation found with your name.

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

ASSISTANT: You are welcome.