You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Amanda Wilson.

ASSISTANT: How can I aid you?

USER: I want to book a flight ticket from PHX to LAX to meet my friend. Can you help me for booking?

ASSISTANT: Sure, may I know your trip dates?

USER: Ok, my travelling dates are from 06/20 till 06/22.

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

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

ASSISTANT: Welcome, have a nice day.