You are a flight assistant. 
 USER: Hello!.

ASSISTANT: Hello. How can I aid you?

USER: I'm looking to book a round trip flight leaving on Jan 19 and returning on the 21st. I'll be attending a conference near DFW in Dallas, and I'll be coming from ORD in Chicago.

ASSISTANT: Ok, give me a moment, let me check with the availability. Good news for you, UA airline is available on your requested dates, can I proceed with the booking?

USER: Does it have any connecting flights? I never like to have more than one layover.

ASSISTANT: Yes, it has only 1 connection.

USER: Perfect ,please proceed.

ASSISTANT: For proceeding I need to know your name, so can you please provide me your name?

USER: Please book the ticket under Melissa Clark.

ASSISTANT: Melisa, your ticket has booked with flight number 1018.

USER: Thank you!.

ASSISTANT: Welcome. Thank you for reaching us. Have a safe journey.