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

ASSISTANT: Hello. How may I help you today?

USER: I need to book a flight ticket from ORD it's a round trip, Can you please help me for booking?

ASSISTANT: When you are planning to depart and arrive?

USER: I would like to travel on 05/21 to return on 05/23.

ASSISTANT: Please share me your budget for flight ticket.

USER: I can pay up to 5000.

ASSISTANT: We found a connecting flight with an airline UA of flight 1000 and fare is 100. Can I confirm?

USER: Ok, proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.