You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you?

USER: I am Debra Miller.

ASSISTANT: Ok.

USER: My meeting got postponed as of now, so I need to change my existing reservation.

ASSISTANT: Sure, I will help you.

USER: Can you please help me?

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for your time, no reservation found on the name of Debra Miller.

USER: Not a problem. Thank you for the information.

ASSISTANT: Thank you for availing us.