You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me in doing a reservation from LGA to LAS?

ASSISTANT: Sure, I will help you. May I know your planned travel dates please?

USER: My trip dates are Nov 24 to 26.

ASSISTANT: Can I have your name please?

USER: Richard Thompson here.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Richard Thompson, no flights has been found on your planned travel dates.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.