You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I serve you?

USER: I am Ronald Roberts. Please book a flight on 03/20.

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: May I know your return date?

USER: I will be returning on 03/22.

ASSISTANT: Can you share me your airport codes?

USER: New York, LGA to Oakland, OAK to attend the interview.

ASSISTANT: Do you have any preferences?

USER: I need a stopover in between my journey. 5000 is the amount.

ASSISTANT: There is a flight 1021 in Southwest airline and price 100 with a connection.

USER: You can Proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.