You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: Jennifer Mitchell here.

ASSISTANT: What can I do for you Mitchell?

USER: I want to book a ticket from DCA to MSP for enquiring the courses in college which is located at MSP.

ASSISTANT: Sure, I will help you with that. What dates you want leave and return?

USER: My journey dates are from 11/15 to 11/17.

ASSISTANT: Sure, please wait for a minute. I am really sorry for to tell you, I cannot find any flight with your requirements.

USER: That's ok. Thank you for your great service.

ASSISTANT: Thanks for contacting us, have a nice day.