You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a ticket from Denver, CO - DEN to visit some famous places in Seattle.

ASSISTANT: Ok, when are you planning to travel?

USER: My scheduled dates are 06/11 and 06/13.

ASSISTANT: Please provide your destination airport code.

USER: My destination airport code is WA - SEA.

ASSISTANT: Please help me with your specifications. AA airlines with single connection and price is 100 of 1008 flight.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.