You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please book a ticket from LGA to EWR?

ASSISTANT: Sure, can you please share your travel dates?

USER: My travelling dates are on Dec 22 and Dec 24.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: May I know your connection limit?

USER: I need a single connection.

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

USER: I need a normal cost airline.

ASSISTANT: May I know your name to proceed further?

USER: My name is Ashley Wilson.

ASSISTANT: Ashley Wilson, I am sorry to inform you that there is no flight available at your request.

USER: Ok, not a problem. Thank you.

ASSISTANT: You are welcome. Thank you for contacting us.