You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight ticket from LAX to LAS?

ASSISTANT: Sure, please share your journey dates?

USER: I planned my journey on the dates Jan 26 and Jan 28.

ASSISTANT: Do you have any specifications?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Is there any class preferences?

USER: No.

ASSISTANT: May I know your good name?

USER: Myself Ashley Davis. Ensure, I prefer evening flight for my return journey.

ASSISTANT: Sorry, no flights found on your given details.

USER: No issue, anyway thank you for checking.

ASSISTANT: Thank you for choosing us.