You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, welcome to smile agency. How can I assist you?

USER: I am Katherine Johnson. I need to cancel my recent reservation due to bad weather in my city. Could you please help me in doing that?

ASSISTANT: Definitely, let me check your details of reservation.

USER: Sure.

ASSISTANT: Johnson, there is no reservation found on your name to do cancellation.

USER: No problem, thank you for your valuable information.

ASSISTANT: Welcome, thank you so much for using our service.