You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Will you please assist me in booking a flight ticket from HOU to CLT?

ASSISTANT: Sure, please provide your travelling dates.

USER: My travelling dates are Sept 23rd and Sept 25th.

ASSISTANT: Ok, Do you have any class preference?

USER: I prefer to travel in an economy class.

ASSISTANT: Ok, please let me know your connection limit.

USER: Yes, I need a flight with single connection.

ASSISTANT: Ok, Is there any other preferences?

USER: No.

ASSISTANT: Thank you for providing details, we found a connecting flight in 1004 Delta Airlines with a fare of 400. Can I proceed?

USER: You can proceed.

ASSISTANT: May I know your name?

USER: Jonathan Green.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.