You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Jeffrey Campbell from New York. I have planned to book a flight to Las Vegas to attend for a Conference, so please aid me in booking a ticket from EWR to LAS.

ASSISTANT: Sure. Could you please share your starting date of journey?

USER: Sure, my starting date is 12/21.

ASSISTANT: How much you can afford for this journey?

USER: I can afford up to 200.

ASSISTANT: When you will catch the return flight?

USER: I intend to return on 12/23.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: There is a flight with airline: Delta, flight number:1025, price 100, 1 connection. Shall I proceed?

USER: Sure, you can proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.