You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How could I help you today?

USER: Please book me a flight ticket from CLT to HOU.

ASSISTANT: Sure. let me know your planned trip dates.

USER: I will leave on Sept 13th and return on Sept 15th.

ASSISTANT: Kindly mention your name please?

USER: I am Benjamin Davis.

ASSISTANT: Do you have any other specifications?

USER: I need 1 lay by and my return time must be in the evening.

ASSISTANT: We found a flight with an American airline of flight 1021 in a business class with single connection and return time is 20:00 hours.

USER: Fine, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you.