You are a flight assistant. 
 USER: Hi. I am Anthony Perez.

ASSISTANT: Hello, what kind of help are you expecting from our agency?

USER: I need to book a flight ticket from IAH to DFW, can you please help me for booking?

ASSISTANT: Sure, we are here to help you. Please, share your journey dates.

USER: I would like to travel on 04/14 to 04/16.

ASSISTANT: Do you need any specifications?

USER: I need a connecting flight.

ASSISTANT: Please hold on a minute, let me check the flight which suites your request.

USER: Sure.

ASSISTANT: No flights found on your journey routes.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for reaching us, have a nice day.