You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am planning to go for MSP from DCA, can you please search a flight ticket for me?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: My travelling dates are Aug 16 and Aug 18.

ASSISTANT: Do you prefer any specific timings to travel?

USER: No.

ASSISTANT: Are you looking for any connecting flight or direct flight only you want?

USER: I want connecting flight.

ASSISTANT: Can I have your good name please to proceed further?

USER: Myself Patrick King.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: Sorry Patrick King, no flight is available to you on your dates due to some issues.

USER: Ok, fine thanks for checking.

ASSISTANT: Thank you for choosing us, have a good day.