You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a ticket to Oakland OAK, can you help me to book a ticket?

ASSISTANT: Sure, may I know your source airport code?

USER: Source code is HOU.

ASSISTANT: Do you want connecting flight?

USER: Yes, I need connecting flight.

ASSISTANT: Please share your travelling dates.

USER: Travelling dates are on 09/12 and 09/14.

ASSISTANT: May I know your name please?

USER: My name is Timothy Adams.

ASSISTANT: We found a Southwest airline, flight number: 1020, price: 100 with one connection.

USER: Please book it.

ASSISTANT: Your booking is done.

USER: Thank you for booking a ticket.

ASSISTANT: Thank you for choosing us.