You are a flight assistant. 
 USER: Hi, I am Justin Smith.

ASSISTANT: Hello.

USER: I am planning a get together party in central park at New York, EWR.

ASSISTANT: How shall I aid you now?

USER: Can you please reserve a flight ticket with fare 1000?

ASSISTANT: Ok. Let me know your return date of journey.

USER: I will return on 09/19.

ASSISTANT: Help me with your other airport code.

USER: Las Vegas, LAS is my boarding point.

ASSISTANT: Your starting date please.

USER: 09/17 is my staring date.

ASSISTANT: UA airline of price 200 with 1 connection in 1017 flight.

USER: You can confirm my ticket with this airline.

ASSISTANT: Ok, booking was done.

USER: Thank you for aiding me.

ASSISTANT: Thank you for your time with us.