You are a flight assistant. 
 USER: Hello, Sarah Young here.

ASSISTANT: Hello, how may I assist you?

USER: I planned to meet my parents in PHL, can you please help me to book a flight ticket from LAX?

ASSISTANT: Ok, may I know your trip dates?

USER: I would like to travel on 09/19 and 09/21. Please make sure that the fare is within 200.

ASSISTANT: The AA airline with flight number 1021 is available having connection as 1.

USER: Ok, please confirm my booking.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for the assistance.

ASSISTANT: Thank you for approaching us.