You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Please help me out in booking the ticket from ORD to OAK.

ASSISTANT: Sure, let me know your class preference.

USER: No class preferred.

ASSISTANT: In which airline, you want to go?

USER: I will prefer major airline.

ASSISTANT: Ok, please share your planned dates.

USER: My trip dates will be Jan 3 to Jan 5.

ASSISTANT: May I know your good name please?

USER: Amanda Young is my name.

ASSISTANT: Do you have any other concerns to say?

USER: I want my depart time must be in the evening.

ASSISTANT: Ok, wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we are sorry to say that no flights are found based on your information.

USER: That's ok, thank you.

ASSISTANT: Thank you for availing us.