You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: I need to book a flight ticket from LAX to LAS. Please help me in booking a flight ticket.

ASSISTANT: Sure, may I know your depart and return dates?

USER: My journey dates are from June, 25 to June, 27.

ASSISTANT: Do you want connecting flight?

USER: Yes, I need a single connecting flight.

ASSISTANT: May I know your depart time?

USER: I need to depart in the evening.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Kathleen Campbell.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for opting us.