You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: My name is Jacob Jones. I would like to travel from LAX to PHX, could you help me out?

ASSISTANT: Sure, May I know your trip dates to check the best flight in your route.

USER: My preferable dates are from 04/20 to 04/22.

ASSISTANT: Sorry Jones, here I didn't find any flights in your route.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.