You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am searching for a service which can book a flight ticket for round trip in Dallas, TX - DFW. Can you assist me about it?

ASSISTANT: Sure, I can help you with that. Can you please share your preferable travel dates?

USER: My preferable travel dates are 11/08 and 11/10.

ASSISTANT: Could you please provide the source airport code?

USER: My source airport is Dallas, TX - DFW.

ASSISTANT: May I know your name to proceed further?

USER: Sure, I am Dorothy Collins.

ASSISTANT: Dorothy, there is a flight available with price fare 200 and the airline is Delta with 1 connection.Would you like me to proceed with booking?

USER: Yes, perfect.Book it for me.

ASSISTANT: Your booking is confirmed with 1005 flight number.

USER: Thank you for the booking.

ASSISTANT: You are welcome. Thank you for contacting us.