You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Virginia Robinson, can you help em to book a flight within 500 price limit?

ASSISTANT: Sure, I can help you with that. May I know your respective airport codes please?

USER: My airport codes are PHL and ATL.

ASSISTANT: Ok, can you please let me know your planned travel dates?

USER: I would like to fly on 01/13 and 01/15.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Delta airlines is having a flight on that route with travel charge of 200, shall I proceed for booking?

USER: Proceed with booking.

ASSISTANT: I have successfully booked your ticket with flight-1013, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.

USER: Welcome.