You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Kevin Lee here.

ASSISTANT: How may I assist you?

USER: I would like to attend a meeting at Washington, please help me in booking a ticket from MSP to DCA.

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My planned travel dates are on Aug 31 and Sept 02.

ASSISTANT: May I know your connection limit please?

USER: I need a connecting flight.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: I would like to depart in the afternoon.

ASSISTANT: Can you please share your airline preferences?

USER: Any airline is comfortable for me.

ASSISTANT: Do you have any other preferences?

USER: No.

ASSISTANT: Kevin Lee, there are no flights available in your route.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.