You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am James Harris.

ASSISTANT: How may I aid you?

USER: I would like to fly from OAK, can you please assist me in booking a flight ticket to IAD?

ASSISTANT: Sure, when would you like to travel?

USER: My trip dates are June 16th and June 18th.

ASSISTANT:  We found an airline:Spirit, flight number: 1003 and price is 100 with one connection. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked in an economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.