You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I guide you for today?

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

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: My travelling dates are Mar 22 and 24.

ASSISTANT: Are you looking for a connecting flight or direct flight?

USER: I prefer connecting flight.

ASSISTANT: Do you have any class preferences?

USER: No.

ASSISTANT: Do you have any other requirements that you are looking for?

USER: No.

ASSISTANT: Can you please provide your name to proceed further?

USER: My name is Nicole Williams.

ASSISTANT: Sorry, there are no flights available at your request.

USER: No issues, thank you for your time.

ASSISTANT: Thank you for contacting us.