You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Scott Martinez.

ASSISTANT: How can I help you today?

USER: I would like to travel from DFW to LAX to meet my brother, can you help me for booking a flight ticket?

ASSISTANT: Sure, I will help you in booking. Can you please share your trip dates?

USER: My planning dates are from 05/20 till 05/22.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day.