You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rachel Jones.

ASSISTANT: How may I assist you today?

USER: Can you please help me in changing my existing reservation to Orlando? As my meeting got postponed at Orlando.

ASSISTANT: Sure, please hold a moment, let me check with your details.

USER: Sure, I will wait for your information.

ASSISTANT: Sorry, there are no active reservation on your name to change.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for reaching our service.