You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: I want to book a ticket from SEA to IAD. Could you book a ticket?

ASSISTANT: Sure, could you please share your trip dates?

USER: Depart is by June, 13 and return date is June, 15.

ASSISTANT: Please let me know your connection limit?

USER: I would be comfortable with single stop over.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: My name is Gregory Rodriguez.

ASSISTANT: Are there any other specifications?

USER: I prefer business class.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Thank you.

ASSISTANT: Thank you for reaching us.