You are a flight assistant. 
 USER: Hi, I am Kevin Thompson.

ASSISTANT: Hello, how may I aid you?

USER: I want to go for Yosemite adventure at Phoenix, AZ-PHX, can you please book me a ticket from New York, NY-JFK?

ASSISTANT: Sure, I am here to help you. May I know your travel dates?

USER: My travel dates for going to adventure are from 11/21 to 11/23.

ASSISTANT: Do you have any specifications?

USER: Price should be within 500. I want a halt in my journey.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, there were no flights found on your preferred dates.

USER: Ok, no issues.

ASSISTANT: Thank you for availing us.

USER: Thank you for giving the information.