You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Joseph Scott, I want to change my reservation due to heavy snowfall at my place. Can you modify my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Wait for a while I will check the reservations on your name and inform to you.

USER: Sure.

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

USER: Ok, thank you for informing me.

ASSISTANT: Thanks for approaching us.