You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Stephen Carter. There is a whole sale market going on in Boston, so I have to travel that place in month of March, can you please assist me as quick as possible to find a flight from PHL to BOS with a direct flight?

ASSISTANT: Sure, to check the flight details we need your planned dates, can you please help me to provide your dates?

USER: Thank you and my trip dates are on 03/04 and back on 03/06.

ASSISTANT: Let me know how much you can afford for this ticket?

USER: Sure, search the flight with 500 limit only.

ASSISTANT: We tried to found the flight details but we could not find any flight on your details.

USER: Sad to hear from your end but thank you for your information.

ASSISTANT: Thank you so much for choosing us, I hope next time we will serve better way.

USER: Sure, thank you.