You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How could I aid you?

USER: Will you please book me a flight ticket from OAK to LAX?

ASSISTANT: Sure, may I know when you are willing to travel?

USER: I will start on Jan 21st and return on Jan 23rd.

ASSISTANT: Is there any class preference for you?

USER: I will prefer to travel in an economy class.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: May I know your name please?

USER: Jerry Hall.

ASSISTANT: We found a flight with an airline Spirit of flight 1003 in an economy class with single connection.

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.