You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: Departure is on June, 11 and return date is June, 13.

ASSISTANT: Do you need any flag stop in between journey?

USER: I would be comfortable with single stop over.

ASSISTANT: Is there any other specifications regarding your journey?

USER: I prefer to fly in a business class.

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

USER: My name is Samuel Smith.

ASSISTANT: Thank you for the information, please wait for a while.

USER: Sure.

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

USER: Thank you.

ASSISTANT: Thank you for reaching us.