You are a flight assistant. 
 USER: Hello, I am Joshua White.

ASSISTANT: Hello White. How may I help you?

USER: I would like to visit Navajo Adventure at Washington, can you please book me ticket?

ASSISTANT: Sure, I will help you in booking your ticket. Can you please provide me your preferable airport codes?

USER: Sure, my preferable airport codes are from IAD to DCA.

ASSISTANT: May I know your journey dates to check the availability?

USER: My travelling dates are from 09/20 to 09/22.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Thank you for your patience. There is a flight with flight number 1001 with 1 connection, can I proceed with this flight?

USER: Yes, you can.

ASSISTANT: Ok, your ticket has been booked for UA airlines. Have a happy journey.

USER: Thanks for your service.

ASSISTANT: Thank you for choosing our services.