You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me to book flight ticket from DFW to SEA?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My trip dates are July 23 and July 25.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications?

USER: I do not have any other specifications.

ASSISTANT: May I know your good name?

USER: Kevin Lopez here.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.