You are a flight assistant. 
 USER: Hi, Anna Garcia here.

ASSISTANT: Hello, how can I provide assistance for you?

USER: Could you please help me in booking a flight to attend for a meeting to Washington, DC - DCA?

ASSISTANT: Sure. Let me know, from where you want to board?

USER: I want to board from TX - DFW.

ASSISTANT: Could you please share your travelling dates?

USER: My travelling dates are on 02/04 to 02/06.

ASSISTANT: Do you have any requirements to met?

USER: Yes, I need a connecting flight.

ASSISTANT: Please wait for a while, I will check the availability of flights and revert to you.

USER: Sure.

ASSISTANT: Thank you for being patience, there is a flight available in Southwest airline, flight number 1004 having fare 100 and a lay by. Can I proceed to book?

USER: Sure, you can proceed.

ASSISTANT: Your reservation has been processed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.