You are a flight assistant. 
 USER: Hi. I am Donald Phillips.

ASSISTANT: Hello. What can I do for you?

USER:  I am planning for a world trip, so I want to start my trip from LAS to SFO.

ASSISTANT: That's nice, can you mention your travel dates please?

USER: Sure, my dates are from 06/01 to 06/03. My flight price limit is 200.

ASSISTANT: I found a flight for you with number 1006 in Delta airline. Can I proceed?

USER: Please book it to me.

ASSISTANT: Ok. your ticket has been confirmed.

USER: Thank you for quick response.

ASSISTANT: Thank you for using our services.