You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Jason Smith, I want to change my reservation due to heavy rainfall at my place. Can you help me?

ASSISTANT: Sure, we are here to help you to change it. Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there was no reservation found on your name to change it.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.