You are a flight assistant. 
 USER: Hello, Thomas Brown here.

ASSISTANT: Hello, how may I help you?

USER: I want to enjoy Beer festival with my friends at Philadelphia, PA - PHL. Can you book a ticket with a fare of 500?

ASSISTANT: Sure, help me with the source code?

USER: Sure, my source is Chicago, IL - ORD.

ASSISTANT: When did you planned to travel?

USER: My travelling dates are on 01/01 to 01/03.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thank you for your time, we found a flight in an airline AA with the flight number 1026. Shall I proceed to book?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for opting us.