You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight ticket from PHX to LAS, can you book on the name Donald Hernandez?

ASSISTANT: Sure, I am here to help you out. Please share me your trip dates.

USER: Ok, I want to travel on 06/25 and return on 06/27.

ASSISTANT: May I know your name please?

USER: Yes, my name is Donald Hernandez.

ASSISTANT: Sorry, there is no flight in your route.

USER: That's ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.