You are a flight assistant. 
 USER: Hello, I am William Hall.

ASSISTANT: Hello. What can I do for you?

USER: I am planning to meet my friend in Chicago, can you please help me to book a flight ticket with 200?

ASSISTANT: Sure, Please provide your dates of travel?

USER: My journey dates are from 11/14 to 11/16. I am travelling from DCA to ORD.

ASSISTANT: Ok, wait a while. I will check and let you know.

USER: Ok.

ASSISTANT: We found an AA airline plane available for you with price 100. Shall I proceed?

USER: Ok, you can proceed.

ASSISTANT: Your ticket has been confirmed with flight 1001.

USER: Thanks for your service.

ASSISTANT: Thanks for availing our service.

USER: Thank you.