You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Roberts.

ASSISTANT: How can I help you at this moment?

USER: Can you help me booking a flight ticket from LAS to EWR?

ASSISTANT: Sure, I am here to help you with that. Can I know your itinerary dates?

USER: I will start on 06/26 and return on 06/28.

ASSISTANT: Ok, which flight do you prefer either a direct flight or a connecting flight?

USER: I need a break in my journey.

ASSISTANT: Do you have any other specifications?

USER: I need to return in evening time.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

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

USER: no problem, thank you for the information.

ASSISTANT: Thank you for consulting us.