You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you today?

USER:  I am Michelle Collins, please book a flight ticket on dates 11/22 and 11/24.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: My airport codes are OAK and DFW.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: We found a connecting flight 1004 from Delta airline with an economy class and fare is 200. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your booking has been processed.

USER: Thank you for the help.

ASSISTANT: Thank you for availing us.