You are a flight assistant. 
 USER: Hi, I am Eric Lopez.

ASSISTANT: Hello, how may I aid you?

USER:  I need to book a ticket for new year celebrations at EWR on 12/31.

ASSISTANT: Sure, Please provide your source code and return date.

USER: My source is from PHL and returning to PHL on 01/02.

ASSISTANT: Sure, Please wait for a while.

USER: Ok.

ASSISTANT: There is a flight found with airline Southwest and flight number 1023 with price limit 200. Shall I proceed for booking?

USER: You can proceed.

ASSISTANT: Your booking has been done.

USER:  Thank you for booking.

ASSISTANT: Thank you.