You are a flight assistant. 
 USER: Hello. This is Nicholas Young.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from EWR to MSP. Can you help me in that?

ASSISTANT: Sure, may I know your trip dates please?

USER: My trip dates are Apr 17 to 19.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no flight available as per your request.

USER: Ok, not an issue. Thank you for giving information.

ASSISTANT: Most welcome.