You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: My name is Joshua Thomas. Can you help me to book a flight from DEN on 10/19?

ASSISTANT: Sure, could you please provide your destination code to search for the flight?

USER: My preferred destination place is EWR.

ASSISTANT: Ok, will you need a return ticket too?

USER: I would like to return on 10/21.

ASSISTANT: Ok, please hold on for a moment.

USER: Sure.

ASSISTANT: Ok, there is a flight 1005 JetBlue airline matching your details with price 200. Shall I proceed?

USER: Proceed with booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: You are welcome.