You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you please check for the flights from LAX to LAS?

ASSISTANT: Sure, can you share your trip dates?

USER: My journey dates are from Aug 28 to Aug 30.

ASSISTANT: Do you need any connections?

USER: I need a connecting flight with depart time in evening.

ASSISTANT: May I know your name?

USER: I am David Clark. I prefer a normal cost airline.

ASSISTANT: Sorry, there is no flight found under your details.

USER: Oh! That's sad to know. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.