You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: Due to heavy rain, I want to change my reservation. Can you help me?

ASSISTANT: Sure, may I know your name?

USER: Jeffrey Robinson here.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure, Make it fast.

ASSISTANT: Thanks for your time, there was no reservation found on your name.

USER: No issue, Thank you.

ASSISTANT: Thank you for availing our service.