You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Charles Davis.

ASSISTANT: How may I help you?

USER: I want to visit a national park in New York, can I have a booking?

ASSISTANT: Sure, may I know your airport codes?

USER: My location codes are from PHX to EWR.

ASSISTANT: Could you please mention your trip dates?

USER: Dates will be from 08/16 to 08/18.

ASSISTANT: Ok, wait a moment.

USER: Take your time.

ASSISTANT: Sorry, no flights had been found on your name.

USER: Make sure if the price is 500 only. Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thanks for checking.