You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I best serve you today?

USER: Please help me in booking a flight ticket from IAD to MCO.

ASSISTANT: Sure, can you please mention your depart and arrival dates of your journey?

USER: I will start on July, 23 and return on July, 25.

ASSISTANT: Do you like to go with a connecting or direct flight?

USER: I would prefer connecting flight.

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

USER: Charles Scott here.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.