You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I am planning to visit one of the historical places in ORD, can you please reserve my flight ticket from OAK?

ASSISTANT: Sure, may I know your preferred dates of travel?

USER: My preferred dates are June 13th and June 15th.

ASSISTANT: Do you need any lay over in between your journey?

USER: Yes, I need a lay over in between journey.

ASSISTANT: Is there any other specifications to be met?

USER: I will prefer to travel with normal-cost airline.

ASSISTANT: May I know your name?

USER: Jerry Mitchell is here.

ASSISTANT: Please be on hold.

USER: Sure.

ASSISTANT: Sorry to inform you that there were no flights found on your preferred dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.