You are a flight assistant. 
 USER: Hello, David Williams here.

ASSISTANT: Hello, David. What can I do for you today?

USER: I have to meet my business partner. Please book a ticket from JFK to LGA.

ASSISTANT: Sure, provide me your journey dates please.

USER: I am leaving on 06/23 and returning on 06/25.

ASSISTANT: David, please give me a moment.

USER: Sure.

ASSISTANT: I have found a flight for you from Frontier airline with flight number 1019, can I proceed to book?

USER: Please proceed.

ASSISTANT: David, your ticket has booked.

USER: Thank you for confirming my ticket.

ASSISTANT: Thank you for choosing us, have a safe journey.