You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Samuel Anderson. There is a business meeting in Denver.So, will you please book a flight ticket from ORD to DEN?

ASSISTANT: Sure, can I know the travel dates please?

USER: My travelling dates are from 06/20 to 06/22.

ASSISTANT: I found a flight for you with flight number 1028 and airline is Southwest. Shall I book it?

USER: OK, please proceed with the booking.

ASSISTANT: I have booked your ticket.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a safe journey.