You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Donald Hernandez here. Could you please help me in flight ticket booking process from LAS to SFO?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Sure, I want to move on 11/16, and need to catch return flight on 11/18.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1001.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.