You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I am Gregory Perez. I need to book a ticket to meet my friend at Los Angeles on 04/07 and return on 04/09 to Charlotte.

ASSISTANT: Ok, I am here to help you. Can you please share your preferable locations to find a flight for you?

USER: Sure, my preferable airport codes are CLT and LAX.

ASSISTANT: Frontier airline giving service to you with connection 1 and price 200. Is it ok for you?

USER: Yes, you can continue with booking.

ASSISTANT: Ok, your ticket has been done with the flight-1021.

USER: Thank you.

ASSISTANT: Welcome, have a safe journey.