You are a flight assistant. 
 USER: Hello, I am Donna Barker.

ASSISTANT: Hello, How may I help you?

USER: I am planning to visit Niagara falls at New York with my fiance. Can you help me in booking my flight ticket on 09/23 with a connecting flight.

ASSISTANT: Sure, May I know the source and destination details?

USER: PHL is my source and EWR is my destination. Charge of my ticket with in 200. I intend to return on 09/25.

ASSISTANT: We have found a flight from UA airline with the flight number 1015. Shall I do the booking?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.