You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: My name is Steven Scott. I want to book a flight ticket.

ASSISTANT: Can I have your journey locations please?

USER: My source and destination codes are from  CA- SFO to TX- DFW. I need these dates for my journey that is from 01/17 to 01/19.

ASSISTANT: There is one flight available with 1 connection of flight. The price of the ticket is 100. Are you satisfied with the above details?

USER: Please book this ticket. Yes, I had satisfied.

ASSISTANT: Your ticket is booked. The flight number is 1020 and it is Spirit airlines.

USER: OK, thank you for your help.

ASSISTANT: Have a great journey. Thank you.