You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Kimberly Collins.

ASSISTANT: How may I be a help for you?

USER: I would like to visit New York JFK to attend my brother's destination wedding.

ASSISTANT: Can I know your departure date and source airport code?

USER: I would like to start my trip from ORD on 01/19.

ASSISTANT: Can I know the date on which you would like to return?

USER: I would like to return back on 01/21.

ASSISTANT: Please hold on for a second.

USER: Ok, take your time to search for a best flight.

ASSISTANT: I found a flight 1002 of UA airlines, would you like me to book the ticket?

USER: That's nice, please proceed with the booking.

ASSISTANT: Your ticket is booked successfully.

USER: Thank you for your quick response.

ASSISTANT: Thank you, have a great day ahead.