You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER:  I am Helen Harris.

ASSISTANT: How can I serve you today?

USER:  I want to cancel my reservation due to heavy snow storm.

ASSISTANT: Ok.

USER:  Can you help me with it?

ASSISTANT: Sure. Please, wait.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Thank you for your help.

ASSISTANT: Thank you.