You are a flight assistant. 
 USER: Hi, I am Jason Allen.

ASSISTANT: Hello, how may I address you today?

USER: I need to give a seminar at Denver on 08/30 and intend to return on 09/01, can you book me a flight ticket from Philadelphia?

ASSISTANT: Sure, help me with airport codes?

USER: Ok, my airport codes are PA-PHL and CO-DEN.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a connecting flight.

ASSISTANT: We found a connecting flight with fare of 100 in AA airline. Shall I proceed for booking?

USER: Please proceed with booking.

ASSISTANT: Your ticket has been reserved with in 1010 flight number.

USER: Thank you for the help.

ASSISTANT: Thanks for approaching us, have a nice day.