You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a flight ticket from SEA to ATL?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travel dates are Oct 18 and Oct 20.

ASSISTANT: On which name should I reserve the flight ticket?

USER: Gary Lopez.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight for this trip.

ASSISTANT: Do you have any other specifications?

USER: No, thanks for asking.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.