You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nicholas Williams here.

ASSISTANT: How may I assist you?

USER: I am looking for a flight with connection limit 0, can you help me with that?

ASSISTANT: Please can I know your airport codes?

USER: Sure, I will catch my flight from LAS and landing on BOS.

ASSISTANT: Can I know your travel dates?

USER: Sure, my travelling dates are 10/09 and 10/11.

ASSISTANT: Sorry, there is no flight found with your requested dates.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Most welcome.