You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Benjamin Allen. I planned to attend for a wedding in SFO, can you please help me to book a flight ticket from DFW?

ASSISTANT: Sure, I am here to help you. Could you please provide me your travel dates?

USER: I prefer to travel on 12/19 and 12/21.

ASSISTANT: Ok, please wait for a while. Flight-1018 is available with Frontier airlines and the ticket fare is 200 only. Is that ok for you?

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket is confirmed and your flight number is 1018.

USER: Thank you for your service.

ASSISTANT: You are most welcome and have a safe flight.