You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you? Yes, Donna.

USER: Myself Donna Green here, and I want to travel from DTW to LAS.

ASSISTANT: Ok, provide me the dates?

USER: Sure, my dates of travel is from 05/11 to 05/13. My connection limit is 0.

ASSISTANT: Please, wait a moment. Sorry, there no flight on 0 connection limit.

USER: Ok, that's fine. Thank you, for your help.

ASSISTANT: Thank you for reaching us.