You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello.

USER: I am Matthew Nelson.

ASSISTANT: How can I aid you Nelson?

USER: Please make me a plane reservation with in price 500.

ASSISTANT: Sure Matthew Nelson, we are here to help you. May I know your connection limit?

USER: I need a single flag stop.

ASSISTANT: Could you please forward your airport codes?

USER: I would fly out from SFO and reach PHL to give seminar in my college.

ASSISTANT: May I know when you are willing to travel?

USER: My depart is on 06/11 and return is on 06/13.

ASSISTANT: Please wait for a couple of minutes.

USER: Ok.

ASSISTANT: UA 1010 airline is exactly matches your travelling schedule dates. Price is of 100, Is it ok  for you?

USER: Ok, please proceed.

ASSISTANT: Your booking has been confirmed on name of Matthew Nelson.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us, have a nice day.