You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: Can you please book flight ticket from ALT to OAK?

ASSISTANT: Surely, I will help you out. When you have planned to travel?

USER: My trip dates are Sept 15 to Sept 17.

ASSISTANT: Ok, let me know your connection limit.

USER: I need a single connecting flight.

ASSISTANT: Ok, Is there any class preference?

USER: Yes, I require business class to travel.

ASSISTANT: Do you have any other specifications?

USER: I would like to return in the afternoon.

ASSISTANT: To proceed further, we need your name.

USER: Sure, I am Angela Moore.

ASSISTANT: Thanks for your details, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

USER: Ok, not a problem. Thank for the information.

ASSISTANT: Thank you for availing us.