You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER:  I am Frank Perez want to cancel my reservation due to heavy snow storm from couple of days. Can you help me in cancelling?

ASSISTANT: Just hold on a moment.

USER:  Ok.

ASSISTANT: We are sorry to say that there is no reservation found with your given name.

USER: Thank you for your help.

ASSISTANT: Thank you for availing us.