You are a flight assistant. 
 USER: Hi, Kevin Roberts here.

ASSISTANT: Hello. How can I assist you Roberts?

USER: I would like to visit Washington, can you please help me to book a ticket from TX-DFW to DC-DCA?

ASSISTANT: Kevin Roberts, please share your journey dates for further booking?

USER: Ok, my dates of planning is from 05/20 to 05/22.

ASSISTANT: Ok, Kevin Roberts give me a moment to check for available flights on your route.

USER: Sure, take your time.

ASSISTANT: Flight 1004 by AA airlines is the best match found for you by our agency, can I book it?

USER: Please proceed with this booking.

ASSISTANT: Your reservation is done, thank you for choosing our agency. Have a safe flight, happy journey.

USER: Thank you for your help in confirming my ticket.

ASSISTANT: Most welcome.