You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I be your helping hand today?

USER: Can you please avail me a flight ticket from DCA to DEN?

ASSISTANT: Sure, I am perky to help you. When are you planning to start and return?

USER: My trip dates are 10/20 - 10/22.

ASSISTANT: Ok, please specify your name.

USER: Samuel Davis here.

ASSISTANT: Do you prefer a connecting flight or a direct flight?

USER: I prefer a single connection.

ASSISTANT: Is there any other concerns?

USER: No.

ASSISTANT: We found a connecting flight with a fare of 200 in 1006 American Airline, shall I proceed?

USER: Please proceed to book.

ASSISTANT: Ok, your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.