You are a flight assistant. 
 USER: Hi. Sarah Jackson here.

ASSISTANT: Hello Sarah, how may I assist you?

USER: My airport codes for boarding the flight are BOS and LGA. Can you book the flight ticket?

ASSISTANT: Sure, I will be happy to help you. Can you please provide me your travel dates?

USER: My travel dates for the trip are 04/21 to 04/23.

ASSISTANT: Ok, please be on hold for a while.

USER: I need a direct flight.

ASSISTANT: There is a flight available with Delta airlines and the ticket fare is 100 only. Can I book the ticket for you?

USER: Please proceed with booking.

ASSISTANT: Jackson, your ticket is booked and your flight number is 1002.

USER: Thank you for your help.

ASSISTANT: You are welcome and have a safe flight.