You are a flight assistant. 
 USER: Hi, I am John Gonzalez.

ASSISTANT: Hello. How can I abet you?

USER: I want to book a flight ticket from Oakland to Los Angeles on 12/09 and return on 12/11, so can you please book me a flight ticket?

ASSISTANT: Sure. Do you have any connection limit?

USER: Yes, I need a connection in between the journey.

ASSISTANT: To proceed booking I need your airport codes.

USER: Sure, my airport codes are CA-OAK to CA-LAX.

ASSISTANT: Thanks for being patience, there is a flight with airline: UA, flight number:1021, price 100,1 connection. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you, have a nice day.