You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Christopher Martin, I want to cancel my ticket as I planned to visit my elder sister but due to heavy snowfall at my destination my plan is cancelled. Can you help me to cancel my ticket?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation with your name.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.