You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I support you at this moment?

USER: My name is Lisa Scott.

ASSISTANT: OK.

USER: I would like to attend my convocation at Philadelphia. Can you help me in book a flight ticket?

ASSISTANT: Sure, I are here to help you only. At what price range you are looking for a flight?

USER: Make sure that price limit is 500.

ASSISTANT: Ok, are you comfortable with direct flight or connecting flight?

USER: I need a connecting flight between my journey.

ASSISTANT: Ok, may I know on which dates you are willing to travel?

USER: My travelling dates are from 11/15 to 11/17.

ASSISTANT: Please provide your origin airport and destination airport code?

USER: My origin and destination are Houston, IAH and Philadelphia, PHL.

ASSISTANT: Thanks for the information.

USER: Ok.

ASSISTANT: We found an AA airline flight with 1001 number is available under you price limit. Airfare is 200. Shall I go to booking process?

USER: Ok, Proceed.

ASSISTANT: Ok, your booking with AA airline is confirmed.

USER: Ok, Thanks for your service.

ASSISTANT: Thanks for reaching us, have a safe journey.