You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Brenda Gonzalez. I need to attend a business meeting at Charlotte, CLT. Will you help me in booking a flight ticket from Houston, IAH?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: I will start my journey on 10/19 and return on 10/21.

ASSISTANT: Do you have any preferences?

USER: I need a direct flight. Price should not exceed 1000.

ASSISTANT: We found a direct flight in Southwest airline and flight number 1001 having price 100, shall I proceed to book?

USER: Please, confirm my reservation with this flight.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your service.

ASSISTANT: Thank you.