You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Anna Robinson, I would like to go for round trip to attend my brother's marriage at Oakland.

ASSISTANT: Ok.

USER: Could you please help me in booking a ticket with the fare of 200?

ASSISTANT: Sure. To help you in booking, please provide me the airport codes of both locations.

USER: It is a round trip and my airport code is OAK.

ASSISTANT: Ok. Can you please share the travel dates?

USER: My journey dates are from 08/20 to 08/22. Please make sure that the flight should have single connection.

ASSISTANT: Ok. Please wait a minute, I will revert you with flight details.

USER: Sure.

ASSISTANT: There is a flight that matches your criteria, flight number 1002, airline:Southwest. May I proceed to book?

USER: Please proceed.

ASSISTANT: Ok. Your ticket has been confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us, Have a nice day!.