You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you today?

USER: I need to attend my parent's wedding anniversary on 05/26 in Washington DC - DCA, could you please help me to book my flight ticket.

ASSISTANT: Sure, could you please provide your further details to proceed?

USER: OK. Actually I want to travel from Washington DC - DCA on 05/26 to Denver, CO - DEN. And my return date is on 05/28. Please make the booking with the name Anna Harris.

ASSISTANT: OK, do you have any preference connections and price limit?

USER: Yes, price limit can be 1000 and connection must be one.

ASSISTANT: OK, we are glad to inform you that we have found a flight on that day. details are as follows airline-Southwest flight number-1022 connection-1 and price is 100. Shall I proceed to booking?

USER: I am comfortable with this booking, you can proceed now.

ASSISTANT: OK, your reservation has been done.

USER: Thank you. I am happy with your service.

ASSISTANT: Your are welcome, thanks for contacting us. Have a great day ahead.