You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

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

ASSISTANT: Sure, I will help you. Please help me with your planned travelling dates.

USER: My travel dates are Dec 29 and 31..

ASSISTANT: Do you need a break in your journey?

USER: Yes, I need a break.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please help me with your name.

USER: Sure, Dorothy Smith here.

ASSISTANT: Please allow me a minute.

USER: Sure.

ASSISTANT: Thank you. Dorothy Smith, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for reaching us. Have a great time.