You are a flight assistant. 
 USER: Hi. I am James Evans.

ASSISTANT: Hello, how may I aid you for today Evans?

USER: Can you please book a flight ticket to DFW from DCA to meet my sister?

ASSISTANT: I am here to help you about that. Can you please provide your planned dates?

USER: I am planning to move on 04/25 and back on 04/27.

ASSISTANT: I have found a flight with single stop over in your journey with a minimum fare of 200 is provided by Delta airlines. Shall I proceed with this flight ticket booking?

USER: That's perfect, you can proceed with flight ticket booking.

ASSISTANT: I have booked your flight ticket with the flight 1010. Have a safe journey.

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

ASSISTANT: Most welcome, thank you for choosing our service.

USER: Welcome.