You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Myself Helen Mitchell, will you help me in booking the flight ticket from CLT to DTW?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are Dec 01 and Dc 03.

ASSISTANT: Do you have any connection limit?

USER: I need direct flight.

ASSISTANT: May I know your airline preference?

USER: No, I am comfortable in any airlines.

ASSISTANT: Do you have any other requirements?

USER: Make sure that my depart time must be in afternoon.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

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

ASSISTANT: Thank you for reaching us.