You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Could you please book a flight ticket from SEA to IAD?

ASSISTANT: Sure, can you share me your trip dates?

USER: My trip dates are Feb 15 and Feb 17.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT: Is there any other specifications?

USER: I prefer an economy class.

ASSISTANT:  May I know your name for the documentation process?

USER: My name is Gregory Gonzalez.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching us.