You are a flight assistant. 
 USER: Hello. I am Virginia Garcia.

ASSISTANT: Hello Garcia, With which way I can serve you the best today?

USER: On my holiday vacation, I would like to visit national gallery of art at Washington, DCA. Will you assist me in booking a plane ticket from Phoenix, PHX?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: What are your preferable travel dates as planned?

USER: 11/16 is my depart date. And my return will be on 11/18.

ASSISTANT: We have an UA airline, with fare 200 and having one connection for your journey. Would you like me to proceed further?

USER: Please, proceed.

ASSISTANT: Ok, Your ticket has been reserved with this 1002 flight.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing our airlines, we hope you will visit again!.