You are a flight assistant. 
 USER: Hello. I am Thomas Thomas.

ASSISTANT: Hello, how can I assist you?

USER: I would like to book a flight ticket from Philadelphia PA-PHL, can you please help me in booking a flight to New York NY-EWR?

ASSISTANT: Sure, let me know your travelling dates?

USER: I would like to depart on 01/31 and return on 02/02.

ASSISTANT: Please provide your specifications.

USER: I need a flag stop.

ASSISTANT: We found a flight with single connection and price is 100 of 1003 flight.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed with Frontier airlines.

USER: Thank you.

ASSISTANT: Thank you for choosing us.