You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you?

USER: Please book a ticket from Oakland, CA-OAK to Philadelphia, PA-PHL, for sporting event. I am John Smith.

ASSISTANT: Ok, when do you want to travel?

USER: Departure will be 01/13 and return is by 01/15.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: We found a connecting flight on delta airline, flight number 1022 with the price of 200.

USER: Please book a ticket.

ASSISTANT: Your ticket has been booked.

USER: Thanks for booking ticket.

ASSISTANT: Thank you for opting our agency.