You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: I would like to book a ticket from ORD to DFW, can you please help me with that?

ASSISTANT: Sure, on which dates would you like me to book a flight ticket for you?

USER: The travel dates are from 03/15 to 03/17.

ASSISTANT: Do you have any specifications?

USER: I need a flight with 1 connection limit.

ASSISTANT: May I know your name?

USER: Brian Nelson here.

ASSISTANT: Please give me a minute to check the availability of flights.

USER: Ok.

ASSISTANT: We found a connecting flight in United Airlines with flight number 1000 having an economy class. Shall I confirm your booking?

USER: Please proceed.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for opting us.