You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me to book a flight from PHL to ATL?

ASSISTANT: Sure, please let me know your journey dates.

USER: My travel dates are Apr 21st and 23rd.

ASSISTANT: Ok, do you have any connection preference?

USER: I prefer to fly with a connecting flight.

ASSISTANT: May I know your name to proceed further?

USER: My name is Barbara Carter.

ASSISTANT: There is a flight available in United airlines with price 100 in economy class, shall I proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: Your booking has been done in flight number 1005.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.