You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I aid you now?

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

ASSISTANT: Sure, I can help you in that. Please share me your good name?

USER: Andrew Nelson here.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to notify that, there is no active reservation found on your name.

USER: No issue, Thanks for the information.

ASSISTANT: Thanks for consulting us.