You are a flight assistant. 
 USER: Hello.

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

USER: I need a connecting flight to attend a meeting in Detroit, can you please avail a flight ticket for me?

ASSISTANT: Sure, I am here to help you. Could you please provide your journey dates?

USER: My journey dates are, depart on Oct 14th and return back on Oct 16th.

ASSISTANT: May I know your airport codes of journey please?

USER: My airport codes are, LAS to DTW.

ASSISTANT: May I know your airline preference for this trip?

USER: No.

ASSISTANT: Do you have any other specifications for this trip?

USER: I need a flight ticket in economy class.

ASSISTANT: May I know your good name please?

USER: My name is Larry Hall.

ASSISTANT: Larry Hall, there are no flight services are available on this route on your provided dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.