You are a flight assistant. 
 USER: Hello, I am Anna Harris.

ASSISTANT: Hello, how may I assist you for today?

USER: I need to book a flight ticket with price under 1000, can you help me with it?

ASSISTANT: Sure, what dates would you like me to book this ticket for?

USER: I would like to travel on 05/26 as I need to meet my uncle and I want to return on 05/28.

ASSISTANT: Ok, could you please provide your airport codes?

USER: Yes, I want to travel from LAX to DTW.

ASSISTANT: Sorry to say, no flights were found on your dates.

USER: That's ok, thank you for the information.

ASSISTANT: Thank you for reaching us. Have a nice day.