You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How can I help you?

USER: I am a Movie director and I have to shoot  climax scenes of my movie in SFO, so could you book a ticket from LAS? My journey dates are 12/17 and 12/19.

ASSISTANT: Sure, Just a second please.

USER: Ok. My price limit is 200.

ASSISTANT: May I know your name please?

USER: Daniel Lopez here.

ASSISTANT: UA airline is matching your requirement, can proceed for booking with 1024 flight number?

USER: Please book my ticket.

ASSISTANT: Your booking is done.

USER: Thank you for assisting me.

ASSISTANT: Thank you have a safe journey.