You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you help me in booking from DCA to DTW?

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

USER: My trip dates are Feb 1-3.

ASSISTANT: Do you have any other requirements?

USER: I am looking for a stopover flight.

ASSISTANT: Can I know your name please?

USER: I am Ashley Carter.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: No issue, thank you.

ASSISTANT: Most welcome.