You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Young.

ASSISTANT: How can I assist you?

USER: I would like to travel from CLT to DCA. Can you please help me to book a ticket?

ASSISTANT: Sure, I will help you. When would you like me to book your flight ticket?

USER: I want to start on July 18.

ASSISTANT: Do you have any restriction on connection?

USER: Yes, I need a connecting flight.

ASSISTANT: May I know your return date?

USER: I intend to return on July 20.

ASSISTANT: Let me know your class preference.

USER: I am comfortable with any class.

ASSISTANT: Do you have any other requirements?

USER: I want to return in the evening.

ASSISTANT: Please, wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, there is a flight available with price 200 in Spirit airline having single connection which will depart at 11:00 AM and return at 2:00 AM. Shall I reserve it for your journey?

USER: You can proceed.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1005.

USER: Thank you.

ASSISTANT: Thank you for choosing us.