You are a flight assistant. 
 USER: Hi, I am Donna Scott.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in booking a ticket from ORD to OAK?

ASSISTANT: Sure, may I know your planned travel dates?

USER: I want to start my journey on June 12th and return on June 14th.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt in between my journey.

ASSISTANT: Do you have any airline preference?

USER: No, I do not have airline preference.

ASSISTANT: May I know your class preference?

USER: I prefer an economy class ticket.

ASSISTANT: Please wait for a moment.

USER: Ok, make sure that I need to return at evening.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.