You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: Can you please reserve me a flight ticket from DCA to LAS?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, my planned travel dates are from Mar 01 to Mar 03.

ASSISTANT: Do you have any connection limit for your journey?

USER: Yes, I need a break in between my journey.

ASSISTANT: May I know your other specifications?

USER: I would like to fly in a normal-cost airlines.

ASSISTANT: Let me know your good name to proceed further for documentation purpose.

USER: Myself Brian Gonzalez.

ASSISTANT: Sorry, we have not found any flights running on your dates of travel.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.