You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Mark Roberts.

ASSISTANT: How can I assist you at this moment?

USER: Can you help me in  booking from EWR on 02/14, as there is a farewell party in my college?

ASSISTANT: Sure, can you please provide your destination airport code and return journey date?

USER: My destination is DTW and travelling date is 02/16.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Delta airlines is available on this route with a ticket fare of 100, shall I book your ticket?

USER: You can confirm it.

ASSISTANT: Mark Roberts, your ticket is booked with flight number 1019.

USER: Thank you for helping.

ASSISTANT: Thank you, have a safe journey.