You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you book a flight ticket in my preferable travel dates May, 10 and May, 12?

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: OAK and IAH are my airport codes.

ASSISTANT: Is there any class preference?

USER: No, thanks.

ASSISTANT: Do you have any other requirements?

USER: I need to travel in connecting flight.

ASSISTANT: Ok, please wait for a minute.

USER: Sure.

ASSISTANT: We found a connecting flight in Spirit Airlines with flight number 1028 having an economy class. Shall I proceed to book?

USER: Please proceed.

ASSISTANT: May I know your name?

USER: John Brown here.

ASSISTANT: Your booking has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.