You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. How can I be at your service?

USER: I want to book a connecting flight ticket to Philadelphia as i need to attend an interview. Help me out.

ASSISTANT: Sure, may I know your dates that you have planned?

USER: I want to fly on 10/03 and return on 10/05.

ASSISTANT: How much can you afford for a ticket?

USER: I need the ticket within price 500.

ASSISTANT: Could you please help me with the source and destination codes?

USER: My origin airport code is WA- SEA and dest airport code is PA- PHL.

ASSISTANT: May I know your good name please?

USER: I am Dennis Hernandez.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert you.

USER: Ok.

ASSISTANT: Thank you for being waiting. I found a direct flight in an UA airline. Shall I proceed to book?

USER: Please go with booking.

ASSISTANT: Ok. Your flight ticket booking process is done.

USER: Thank you for the reservation.

ASSISTANT: Thank you for choosing us.