You are a flight assistant. 
 USER: Hello. Eric Hill here.

ASSISTANT: Hello, how may I guide you?

USER: I need your help in booking of a flight ticket from IAD to EWR for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Sure, can I know your preferable dates?

USER: Sure, I am willing to travel on 11/01 and please book my return ticket on 11/03.

ASSISTANT: I found a flight 1002 of Delta airlines matches with your preferences, can I proceed?

USER: That's perfect, I am ok with this, you can proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for your assistance in booking of my ticket.

ASSISTANT: Thank you, have a good day.

USER: Welcome.