You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anna Robinson.

ASSISTANT: How may I assist you today?

USER: I would like to book a ticket from CLT to DTW, can you please help me out?

ASSISTANT: Sure, let me know your travel dates please?

USER: I am travelling on these dates Jan 16th and 18th.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a halt.

ASSISTANT: Do you need any other specifications?

USER: I don't have any other specifications.

ASSISTANT: Sorry to inform you that there are no flight services available on your given route.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thanks for opting us.