You are a flight assistant. 
 USER: Hello, I am Catherine Thomas.

ASSISTANT: Hello, how may I provide assistance for you?

USER: Due to an emergency meeting, I want to change my reservation.

ASSISTANT: Ok.

USER: Can you help me with it?

ASSISTANT: Sure, I will help you. Give me  a minute, I will serach a  reservation on your name and let you know the status.

USER: OK.

ASSISTANT: Thanks for your time. There is no reservation found on your name.

USER: Np problem, thank you for the information.

ASSISTANT: Thank you for availing us.