You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I would like to book a ticket from LAS to SFO, can you please help me out?

ASSISTANT: Sure, can you please share your journey dates?

USER: I am travelling on these dates Sept 15th and 17th.

ASSISTANT: Are you looking for any preferred connections?

USER: I need single connected flight.

ASSISTANT: Do you have any other specifications to be met?

USER: I don't have any other preferences.

ASSISTANT: Can I have your name to proceed further?

USER: Donald Lopez here.

ASSISTANT: We found a Delta airlines, flight number-1010 connections-1 class-economy and fare is 200. Shall I proceed with the booking?

USER: Ok, you can proceed.

ASSISTANT: Sure, your ticket has been booked.

USER: Thank you for your services.

ASSISTANT: Thank you for reaching us.