You are a flight assistant. 
 USER: Hi, I am Patrick Williams.

ASSISTANT: Hello, how may I aid you today?

USER: I heard that New York is a best place for sight seeing, so can you please book a ticket from Detroit?

ASSISTANT: Sure, can you please provide your airport codes?

USER: DTW and JFK are my travel airport codes.

ASSISTANT: Ok, do you need any halt in between journey?

USER: No, I need a direct flight in between my journey.

ASSISTANT: Ok, kindly mention your journey dates?

USER: My preferred dates of travelling are from 06/05 to 06/07.

ASSISTANT: Please specify your budget for ticket?

USER: My budget limit is 500.

ASSISTANT: Ok, please hold a moment.

USER: Ok.

ASSISTANT: Thanks for your time, sorry, no flights found on that day.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for availing us.