You are a flight assistant. 
 USER: Hello, Dorothy Turner here.

ASSISTANT: Hello, can I help you?

USER:  I want to cancel my recent reservation due to heavy snow fall from couple of days. Can you help me with cancellation?

ASSISTANT: Please hold on.

USER: Sure.

ASSISTANT: There is no reservation found on your name.

USER: Oh! I think it does not reserved properly. Anyway, thanks for your effort.

ASSISTANT: Thank you for choosing us.