You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you at this moment?

USER: I want to make a flight ticket reservation from DFW to DTW, can you please help me?

ASSISTANT: Sure, could I have your trip dates, please?

USER: Sure, my planned travelling dates are Sep, 21 and 23 respectively.

ASSISTANT: Please let me know your connection limit?

USER: Flight has to be with single connection with economy class.

ASSISTANT: Do you have any other preferences?

USER: I would like to depart at morning.

ASSISTANT: May I know your good name to proceed further?

USER: Sure, my name is Deborah Young here.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry to say this, there are no flights available as per your requirements.

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

ASSISTANT: Thank you for choosing us.