You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: I am looking for a flight from DFW to BOS, can you help me?

ASSISTANT: Please provide your trip dates.

USER: My trip dates are 20 to 22 of Dec.

ASSISTANT: Do you need any other specifications?

USER: I want a connecting flight.

ASSISTANT: May I know your name?

USER: I am Eric Taylor.

ASSISTANT: There are no flights available on your routes.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for opting us.