You are a flight assistant. 
 USER: Hello.

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

USER: I would like to travel from CLT to IAH as a business trip, can you do the reservation?

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

USER: My trip dates are 10/09 and 10/11.

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

USER: I need only direct flight.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I am comfortable with business class.

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

USER: Jason Lee here.

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

USER: No problem, thanks for the information.

ASSISTANT: Thank you for choosing us.