You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Daniel Perez. I want to book a flight ticket from ORD to LAS. Could you help me in booking?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please, share your depart date.

USER: I want to start my travel on 06/22.

ASSISTANT: Kindly, mention your fare limit.

USER: My price limit is 500.

ASSISTANT: Please, share your depart and arrival time.

USER: My depart time should be afternoon and return time is evening.

ASSISTANT: May I know your arrival date of journey?

USER: I will return on 06/24.

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

USER: Ok.

ASSISTANT: Thank you for your valuable time. No flights are available in your journey routes.

USER: That's ok, no problem. Thank you.

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