You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good morning.

USER: Raymond Lewis here.

ASSISTANT: Lewis, how can I assist you?

USER: One of my friend is invite me to attend a VIVA Awards. Can you book a flight ticket for me?

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My departure date is 06/28 and return date is 06/30.

ASSISTANT: May I know your source and destination airport code?

USER: My airport codes are from NC-CLT to PA-PHL. Make sure my connections limit is 1.

ASSISTANT: Sure, please wait for a moment.

USER: Ok.

ASSISTANT: There is a flight available from UA airlines, are you comfortable to fly in this flight?

USER: Please proceed for booking.

ASSISTANT: Your ticket is confirmed successfully with the flight number 1003.

USER: Thank you for helping me.

ASSISTANT: Thank you for approaching us, have a great flight.