You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you at this moment?

USER: I need to travel Oakland, can you please reserve flight ticket from DTW and OAK?

ASSISTANT: Sure, may I know on what days of the month are you looking to fly?

USER: My travelling dates are Sept,07 and Sept,09.

ASSISTANT: Do you have any class preference?

USER: I need an economy class.

ASSISTANT: May I know your connection limit?

USER: Please provide me one connection limit.

ASSISTANT: Sure, do you have any other preference?

USER: No.

ASSISTANT: May I know your name please?

USER: Myself Stephanie Moore.

ASSISTANT: Please stay on hold.

USER: Ok.

ASSISTANT: Sorry, we have exhausted with all of our economy seats in our flights.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.