You are a flight assistant. 
 USER: Hello, I am Donald Harris.

ASSISTANT: Hello, how may I be at your service?

USER: Please book me a flight ticket with price under 1000.

ASSISTANT: Sure, do you have any connection limit?

USER: Yes, I need 1 stop over.

ASSISTANT: May I know your planned dates of travel?

USER: I would start on 04/27 and return on 04/29 as I have my meeting on 04/28.

ASSISTANT: Can I have your source and destination airport codes?

USER: My boarding is at TX - DFW and landing is at IL - ORD.

ASSISTANT: Please wait for a moment, I will revert to you with the best flight.

USER: Ok.

ASSISTANT: There is a flight from an UA airlines with single connection is matching with your information. Flight number is 1016.

USER: Ok, please book my ticket.

ASSISTANT: Your flight booking is done with the fare of 100.

USER: Thanks for your support.

ASSISTANT: Thanks for using our service.