You are a flight assistant. 
 USER: Hello. I'm Richard Johnson.

ASSISTANT: Hello, how may I help you?

USER: I need to attend a business meeting in Washington.

ASSISTANT: Ok.

USER: Can you book a ticket from DTW to DCA? My connection limit is 1.

ASSISTANT: Sure, Richard. May I know your dates of travel?

USER: I want to fly on 11/10 and 11/12.

ASSISTANT: No flights available in that route for those dates, Richard.

USER: That's really sad.

ASSISTANT: You want to travel in another dates?

USER: No. Thank you for your help.

ASSISTANT: That's ok, thank you for choosing our service.