You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to take part in Boston marathon, could you book my ticket from DFW to BOS?

ASSISTANT: Sure, let me know your planned journey dates?

USER: My itinerary dates are Feb 22 and Feb 24.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Is there any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Christine Adams here.

ASSISTANT: Thanks for your details, there is no found on your desired journey routes.

USER: No problem, thank you.

ASSISTANT: Thank you for reaching us.