You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, Good Evening. How may I aid you?

USER: I am Jonathan Allen here. I am planning to visit a Washing Ton because my friends are visited that place, they have suggested me to visit that place, can you help me in booking a ticket?

ASSISTANT: Yes, I can help you. Can you please mention your travel airport codes for easy search?

USER: Sure, I want to start my journey from CLT to DCA.

ASSISTANT: And when you are willing to travel?

USER: Yes, my preferable dates are 04/18 to 04/20.

ASSISTANT: Ok, please wait for a moment.

USER: Can I know the connection limit please?

ASSISTANT: Ok, I found a flight with connection limit 1, the airlines is Southwest. Can I proceed to book your ticket?

USER: Yes, you can proceed.

ASSISTANT: I have confirmed your ticket to the flight number 1020.

USER: Thank you for helping me in booking a flight ticket.

ASSISTANT: You are welcome. Thank you for using our services.