You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, may I know your planned travel dates?

USER: My planned trip dates are June 25 to June 27.

ASSISTANT: May I know your connection limit?

USER: I need a single connection of flight.

ASSISTANT: Do you have any other specifications?

USER: I want to return in the evening.

ASSISTANT: May I know your good name?

USER: Pamela Garcia.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.