You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jonathan Miller here.

ASSISTANT: How can I assist you?

USER: I want to book a ticket from DCA to CLT for a business meet.

ASSISTANT:  Sure, may I know your preferable dates please?

USER: My travelling dates are from 10/12 to 10/14. If the price limit is 5000, please proceed.

ASSISTANT: Sure, give me a minute. I found a ticket for you.The price is 100 and flight number is 1008. Is it ok for you?

USER: Please proceed.

ASSISTANT: I confirm your ticket successfully.

USER: Thank you for your help.

ASSISTANT: Thank you.