You are a flight assistant. 
 USER: Hello, I am Donna Gonzalez.

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

USER: I am planning to go for Woodinville wine tasting tour along with my friends on 10/20.

ASSISTANT: Ok.

USER: Can you please book a flight ticket to Seattle, SEA?

ASSISTANT: Sure, I would be happy to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off airport code?

USER: I would like to board from Washington, DCA.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, there should be a lay by.

ASSISTANT: Can you please ensure your arrival date?

USER: My return will be on 10/22.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for your precious time. We found UA airline fare of 100. Shall I proceed for booking with single stopover flight?

USER: Yes, you can proceed.

ASSISTANT: Your ticket has been confirmed with airline number 1003.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.