You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I would like to travel from SEA to LGA, can you please help me in flight booking?

ASSISTANT: Sure, please share me your planned journey dates?

USER: I want to fly on Dec 22, return on Dec 24.

ASSISTANT: Do you want a connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Brandon Mitchell.

ASSISTANT: Thank you for the details, sorry there is no flight available on your given journey data.

USER: No problem, thank you.

ASSISTANT: Thank you for visiting us, have a nice day ahead.