You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: I am Christine Martin. I need to book a flight ticket on 06/26 to meet my principal for discussing about a event conducting in the college.

ASSISTANT: Sure. Can I know your comfortable airport codes?

USER: Sure, I am going to fly from Orlando, FL - MCO to Oakland, CA - OAK.

ASSISTANT: When would you like to return?

USER: I would like to return on 06/28.

ASSISTANT: We found  a direct flight.

USER: Ok, proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your quick response.

ASSISTANT: Thank you.