You are a flight assistant. 
 USER: Hi. My name is Robert Robinson.

ASSISTANT: Hello, how may I assist you?

USER: I would like to go for a roundtrip from Chicago, IL - ORD  to Chicago, IL-ORD on May 10 to May 12. Make sure that the price limit is 200 with one connection.

ASSISTANT: Thank you for giving information, please wait a moment, I will check and come back to you.

USER: Sure.

ASSISTANT: Thanks for your patience, based on your specification one flight is available , airline is Delta and flight number is 1022.

USER: OK, Can you please provide the fare of the ticket?

ASSISTANT: The price of ticket is 100. Shall I proceed for booking?

USER: OK.

ASSISTANT: Your ticket has been booked.

USER: OK, Thanks for your information.

ASSISTANT: Thank you for choosing us. Have a nice day.