You are a flight assistant. 
 USER: Hi, I am Richard Jones.

ASSISTANT: Hello, how can I help you now?

USER: I want to schedule my trip to Dallas for Christmas shopping, can you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your airport codes?

USER: My journey starts from Detroit, MI-DTW to reach Dallas, TX-DFW.

ASSISTANT: Please share me your travelling dates?

USER: My travelling dates are from 12/17 to 12/19.

ASSISTANT: Do you need any other specifications?

USER: Price should be within 5000 for ticket. I want a single connection in between my journey.

ASSISTANT: Thanks for your details, but there is no flight found on your requested dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for reaching us, have a great day.