You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Jack Miller. My holiday trip got postponed due to heavy snow fall, can you please change my reservation?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Ok, wait for a while.

USER: Ok.

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

USER: No problem, thank you for the information.

ASSISTANT: Thanks for approaching us.