You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Raymond Gonzalez here. I want to attend a Marriage in Minneapolis. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, please kindly share your travel dates.

USER: My travelling dates are Jun 11 and Jun 13.

ASSISTANT: Can I know your airport codes?

USER: My airport codes are DCA and MSP.

ASSISTANT: Do you need a connecting flight?

USER: Yes.

ASSISTANT: May I know your depart and return timings?

USER: I want to departure and return on afternoon.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Sorry, there is no flight services available on your required dates.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for opting us.