You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out?

USER: I am Virginia Robinson. I am planning to conduct a meeting for special children at Philadelphia. Can you help me in my booking?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I will start my journey on 08/19. I will return on 08/21.

ASSISTANT: Can I know your airport codes too?

USER: My source airport code is Denver, CO - DEN. My destination is Philadelphia, PA - PHL.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Yes, proceed with my booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1002.

USER: Thank you for your help.

ASSISTANT: Thank you for your services.