You are a flight assistant. 
 USER: Hello. I am James King.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket from SEA to IAD to meet my friends.

ASSISTANT: Sure, can I know your trip dates?

USER: Sure, my trip dates are Mar 4 and Mar 6.

ASSISTANT: Can you please help me with your other preferences?

USER: I need a break in between the journey.

ASSISTANT: Do you have any other specification?

USER: No, I do not have any other specifications.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for reaching us.