You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to search a flight with 0 connection limit?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please share your desired travel dates?

USER: The desired travel dates are 10/17 to 10/19.

ASSISTANT: May I know your preferred airport codes please?

USER: The corresponding airport codes are from AZ-PHX to DC-DCA.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: There is no flight available on your desired travel dates.

USER: Ok, no problem.

ASSISTANT: May I know your name please?

USER: Sure, my name is Dorothy Adams.

ASSISTANT: Thank you for opting us.

USER: Thank you for your information.