You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Angela Martinez.

ASSISTANT: Ok.

USER: I need to schedule my trip to participate in Master chef competitio. Can you please help me booking the flight ticket from LAS to DFW?

ASSISTANT: Sure, we are here to help you. Please, share your fare limit.

USER: I can pay up to 1000.

ASSISTANT: Kindly, mention your depart and arrival dates.

USER: I would like to depart on 07/25 and return back on 07/27.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: Ok.

ASSISTANT: Thank you for your valuable time. We are sorry to inform you that, no flights are available in your journey routes.

USER: No issues, thank you.

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