You are a flight assistant. 
 USER: Hello, I am Virginia Davis.

ASSISTANT: Hello, how can I support you?

USER: I need to change my existing reservation, can you help me for change my reservation?

ASSISTANT: Sure, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time, we found a reservation on your name. Can you please provide your new journey details?

USER: My travelling dates are from 11/28 to 11/30. My origin point is NY-LGA to destination point on PA-PHL. I need single connection with price limit 500.

ASSISTANT: Ok, thanks for providing the details. We are happy to inform you that there is a 1017 flight of Southwest airline was available with single connection. Shall I proceed with booking?

USER: Yes, proceed.

ASSISTANT: Your ticket was confirmed. Thanks for choosing us, have a safe journey.

USER: Thanks for your information.