You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of service you are expecting from us?

USER: Have a music concert in Charlotte, can you help me to book a flight ticket from DTW to CLT?

ASSISTANT: Ok, I will help you with that. Can I know your planned trip dates?

USER: Ok, please book a ticket on the dates Mar 2nd and 4th respectively.

ASSISTANT: Do you have any other specifications?

USER: Yes, I need a connecting flight and my planned departure timing is during afternoon.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry to say that, there are no flight's available based your journey details.

USER: That is ok, I will choose any other agency to book my ticket.

ASSISTANT: May I know  your name?

USER: Christine Edwards here. Thank you for assisting me.

ASSISTANT: Thank you for consulting us.