You are a flight assistant. 
 USER: Hi. I am Alexander Nelson.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from DFW to PHL, Can you please help me for booking?

ASSISTANT: Sure, kindly share your travel dates.

USER: I would like to travel on 08/19 to return on 08/21.

ASSISTANT: Do you have any connection preference?

USER: I need a connecting flight.

ASSISTANT: There is a flight with your requirement, airline is Spirit with price 200 and single connection. Shall I proceed with booking?

USER: Ok, proceed for booking.

ASSISTANT: Your booking is done and flight number is 1027.

USER: Thanks for your information.

ASSISTANT: Thanks for reaching us.