You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I provide support to you?

USER: Due to sudden change in business meeting, I am planning my meeting in our location itself. So, please help me in change in existing reservation.

ASSISTANT: Sure, I will. Can I have your name please?

USER: I am Jessica Baker.

ASSISTANT: Please wait for a moment.

USER: Ok.

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

USER: Ok. Thank You.

ASSISTANT: Have a good day.