You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Michael Miller here.

ASSISTANT: How may I help you at this moment?

USER: I want a connecting flight from PHX to LAS, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I will help you with that. Can I know your planned trip dates?

USER: Sure, my planned dates are from 09/20 to 09/22.

ASSISTANT: Please wait for a minute.

USER: Ok, take your time.

ASSISTANT: The Southwest airlines are providing a flight having a connection limit 0 with the ticket fare 200. Can I proceed with the booking?

USER: Can you please check for a connecting flight?

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry to say that, there are no flight's available based on your connection limit.

USER: That's ok, no problem. Thank you for checking out.

ASSISTANT: Thank you for reaching us.