You are a flight assistant. 
 USER: Hi, David Nelson here.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight ticket from DFW to LAX to enjoy season festivals. Can you help me with that?

ASSISTANT: Sure, please share your journey dates?

USER: Sure, I need to fly on May 12 and May 14.

ASSISTANT: Do you have any other specifications to be met?

USER: I need a halt.

ASSISTANT: We found a flight in Southwest airlines, flight number is 1004 with one connection and price is 100. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your reservation is done.

USER: Thank you for your assistance.

ASSISTANT: Thank you for choosing us.