You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nicholas Walker.

ASSISTANT: How can I help you?

USER: I am planning to visit South mountain park in Phoenix, can you please help me in booking a flight ticket?

ASSISTANT: Sure, I will help you to book a flight. Can you please share me your travelling dates?

USER: My planning dates are from 12/03 till 12/05.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: Sure, my airport codes are from JFK to PHX.

ASSISTANT: Give me a moment.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no flight is found on your route.

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

ASSISTANT: Welcome, have a nice day.