You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm David Young.

ASSISTANT: How may I help you?

USER: I am planning to attend music concert at BOS, can you please help me with booking a flight ticket from PHL?

ASSISTANT: Sure, I am here to assist you with the ticket booking.  Will you please provide me your travel dates?

USER: Sure, I would like to take off on 03/05 and return back on 03/07.

ASSISTANT: Ok, thank you for providing the required information. Please allow me some time to check the flight and let you know the flight details.

USER: Ok, but please make sure that the connection limit is 1.

ASSISTANT: Ok, I have found a flight matching to your requirements which is in Delta airlines with connection limit 1. Can I proceed with ticket booking?

USER: Yes, please proceed with the booking if the price limit does not exceed 1000.

ASSISTANT: Ok, there are some offers on the dates you have given. So, your ticket fare is just 100.  I have booked your ticket with the flight number 1025.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching our travel agency. Have a safe journey.

USER: You are welcome.