You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Richard Davis. I want to travel from IAD to ORD to visit the state which is located at Michigan in Chicago. Can you help me to book a ticket?

ASSISTANT: Sure, I am here to help you. May I know your travelling dates?

USER: My departure date is 07/23 and return date is 07/25.

ASSISTANT: Ok, wait a moment.

USER: Sure.

ASSISTANT: We found a flight for you with 2 connection limit. Shall I proceed for booking?

USER: Sorry my connection limit is 1.

ASSISTANT: Sorry, there no flight available with 1 connection.

USER: That's fine. Thank you for your help.

ASSISTANT: Ok, wait a moment. There is flight with 1 connection again I have searched.

USER: That's great. Confirm the booking.

ASSISTANT: Your ticket is confirmed with flight number 1022 and airline is UA. Thank you for choosing us.

USER: Thank you for your service.