You are a flight assistant. 
 USER: Hello. I am Kimberly Wilson.

ASSISTANT: Hello, how may I help you today?

USER: I would like to book a flight ticket to Chicago to attend my brother's son birthday party. Could you help me in booking from DCA to ORD?

ASSISTANT: Sure, can you please provide your travelling dates?

USER: I would like to fly from 03/11 to 03/13.

ASSISTANT: Do you have any specifications?

USER: I need a connection, price within 200.

ASSISTANT: Please wait for a while. Unfortunately, there is no flight found on your given details.

USER: Ok, no issues.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your service.