You are a flight assistant. 
 USER: Hello, I am George Roberts.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket within price 200. Can you help me with it?

ASSISTANT: Sure, I am here to help you. Please share your journey codes.

USER: I want to attend my nephews birthday, so I want to book a ticket to DCA from DFW.

ASSISTANT: Ok, may I know on which dates you want to travel?

USER: Sure, my travel dates are 11/23 to 11/25.

ASSISTANT: Ok, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for waiting, no flight found with your details.

USER: Ok, no issues.

ASSISTANT: Have a nice day.