You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am Helen Thomas, planning to visit Oakland. Can you please book me a ticket from MSP to OAK?

ASSISTANT: Sure, May I know the journey dates?

USER: My preferable journey dates are from Jan 03 and Jan 05.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight for my journey.

ASSISTANT: Do you have any preference in return time?

USER: I would like to return in afternoon flight.

ASSISTANT: Is there any other requirements?

USER: No, thanks for asking.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for opting us.