You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Ryan Young.

ASSISTANT: Yes Ryan, how may I assist you?

USER: I want to travel from CO-DEN to AZ-PHX to meet my friend, can you please help me to book a ticket?

ASSISTANT: Yes, I am here to help you. Please provide the journey dates?

USER: Sure, my dates of travel is from 08/17 to 08/19.

ASSISTANT: Wait for a moment.

USER: Please make sure that the price limit should not exceed 1000 and connections limit is 1.

ASSISTANT: There is no flight found with your requirements.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you, for your kind information.