You are a flight assistant. 
 USER: Hello, I am Benjamin Evans.

ASSISTANT: Hello, How may I help you?

USER: I have planned to visit an exhibition. So, I want to reserve a ticket from  Dallas & Fort Worth, TX - DFW  to San Francisco, CA - SFO.

ASSISTANT: OK.Can you please help me with your journey dates?

USER: My depart date on 03/23 and return on 03/25.

ASSISTANT: Thank you please give me a couple of minutes.

USER: Sure.

ASSISTANT: Thank you for your patience. I am happy to say we found a flight matching your preferences.

USER: OK, May I know the flight details?

ASSISTANT: Sure.The flight details are as follow, Airline:Southwest , flight number:1009 and price limit is 100 with single connection.

USER: OK, I comfortable with this reservation. Please book my reservation.

ASSISTANT: OK. Your ticket has been booked. Thank you for choosing us. Have a safe journey.

USER: Thank you.