You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Kenneth Hernandez. I want to book a flight ticket with a price limit of 1000 to Dallas.

ASSISTANT: Sure, share me your journey dates so that I can search the available flights.

USER: My departure is 06/11 and return date on 06/13.

ASSISTANT: Ok, let me know your source and destination airport codes.

USER: I am planning to attend my cousin's wedding in TX - DFW and my source from Detroit, MI - DTW.

ASSISTANT: Thank you for sharing your details. Kenneth please be on hold, I will be back with the best service for you.

USER: Sure.

ASSISTANT: Sorry to inform you Kenneth, there is no flight available on your route.

USER: Not an issue. Thanks for your quick response.

ASSISTANT: You are welcome. Thank you for choosing our service.