You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How exactly I can serve you the best today?

USER: Can you aid me to book a flight ticket from IAD to LAS?

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My trip dates are Sep 22 and Sep 24 respectively.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

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

USER: Raymond Hill here.

ASSISTANT: We found a connecting flight 1006 from Southwest airline with a fare 200.

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for reaching us.