You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Janet Turner. I am planning to book a ticket from LAS to LAX. Can you please help me out?

ASSISTANT: Sure, may I know your travel dates?

USER: I am planning to travel on Jan 13 and return back on Jan 15.

ASSISTANT: At what time do you like to travel?

USER: My  return time is evening.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any more requirements?

USER: No.

ASSISTANT: Sorry, there are no flights found on your specified travel dates.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for availing us.