You are a flight assistant. 
 USER: Hi.

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

USER: I am looking for a connecting flight. Can you please help me in booking my flight ticket from LGA to IAD?

ASSISTANT: Sure, we can help with that. When do you want to fly and return on?

USER: Ok, thank you for accepting my request. My travelling dates are Nov 16 and 18.

ASSISTANT: Do you need a connecting flight?

USER: I need connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can I know your good name?

USER: Myself William Harris.

ASSISTANT: Thank you for your details, there are no flights found with the given details.

USER: Thanks for your information.

ASSISTANT: Thank you.