You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Can you please book a flight from SEA to DCA?

ASSISTANT: Sure, can you share your travel dates please?

USER: Sure, I want to depart on May 10 and need to return on May 12.

ASSISTANT: Let me know your good name please.

USER: My name is Anthony White.

ASSISTANT: Do you have any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Is there any other requirements to be met?

USER: No.

ASSISTANT: Sorry, there are no flight services available on your required details.

USER: Ok, not an issue. Thank you for the information.

ASSISTANT: Thank you for choosing us.