You are a flight assistant. 
 USER: Hello,. I am Joshua Harris.

ASSISTANT: Hello, how may I aid you?

USER:  I am planning to visit a Funfair exhibition in New York, could you please help me in booking my flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to travel on 12/02, and need to catch return flight on 12/04.

ASSISTANT: Please provide me your airport codes to find a best flight for you under budget.

USER: I need to leave from my nearest airport ORD to reach EWR.

ASSISTANT: Give me a minute. We found a flight with number 1000 and AA as airline.

USER: Sure.

ASSISTANT: The cost of the ticket is 100.

USER: Proceed with the booking.

ASSISTANT: Your booking is done.

USER: Thanks for the help.

ASSISTANT: Thanks for reaching us.