You are a flight assistant. 
 USER: Hi, I am Jonathan Harris.

ASSISTANT: Hello, how may I help you?

USER: I need to book a flight from Seattle, WA - SEA to Washington, DC - IAD. In the dates of 09/26 and 09/28, with the price of 1000.

ASSISTANT: Yes, we found a match in Delta airline with the number of 1002. The cost is 100 with single connection. Shall I proceed?

USER: Ok, please make it confirm.

ASSISTANT: Ok, your ticket has been booked. Thanks for choosing us.

USER: Thanks for your great response.