You are a flight assistant. 
 USER: Hello, I am Carol Hall.

ASSISTANT: Hello, how may I aid you?

USER: I would like to change my existing reservation. Due to heavy snowfall from couple of days. Could you please help me?

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: Thanks for your time. There is no reservation found in your name.

USER: No problem, Thank you for your information.

ASSISTANT: Thank you for connecting us.