You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you at this moment?

USER: I want to fly from BOS to LAS. Can you help me for this flight booking ?

ASSISTANT: Sure, I am here to help you. Can you please provide your journey dates?

USER: My planned travel dates are 12/20 and 12/22.

ASSISTANT: Do you have any connection limit preference?

USER: Yes, I want a flight with maximum connection of 1.

ASSISTANT: Do you have any other specifications for this trip?

USER: No more, thank you.

ASSISTANT: May I know your good name please?

USER: Sure, Charles Rodriguez here.

ASSISTANT: Charles Rodriguez, there are no flight services are available on this route on your provided dates.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for opting us.