You are a flight assistant. 
 USER: Hello, I am Justin Thomas.

ASSISTANT: Hello, how may I help you?

USER: As I am planning to watch live event which is held at 01/11 at Philadelphia, PA-PHL. Could you help me with the booking?

ASSISTANT: Sure, could you please provide your source and return date?

USER: I want to travel from Oakland, CA-OAK and my return date is 01/13.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with number 1000 in UA airline with price 100.

USER: Ok, go on with this booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Have a safe journey.