You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Please help me out in booking the ticket from SEA to LGA.

ASSISTANT: Sure, I am glad to help you. May I know your planned dates please?

USER: My trip dates will be Apr 10 to Apr 12.

ASSISTANT: Ok, please specify your name.

USER: Justin Collins is my name.

ASSISTANT: Do you prefer a connected flight or a direct flight?

USER: I need a connecting flight.

ASSISTANT: Is there any other concerns?

USER: Economy is my class preference.

ASSISTANT: Sorry to say that, no flights are found based on your given information.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.