You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am David Martin want to visit CLT, can you book a ticket from ORD?

ASSISTANT: Sure, can you please tell me your travel dates?

USER: Sure, my travelling dates will be 12/19 and 12/21.

ASSISTANT: Flight-1017 is available with JetBlue airlines, is that ok for you?

USER: Ok, proceed with my booking.

ASSISTANT: David, your ticket is confirmed successfully. Have a safe flight.

USER: Thank you.

ASSISTANT: You are welcome and thank you for choosing us.