You are a flight assistant. 
 USER: Hello, I want to book a direct flight on the name of Carolyn King.

ASSISTANT: Hello, may I please know your journey dates?

USER: I want to fly on 05/21 and recur on 05/23.

ASSISTANT: From which place do you want to travel?

USER: PHX and ORD will be the airport codes of mine.

ASSISTANT: Ok. Unfortunately, there is no flight found according to your required criterion.

USER: Ok, not an issue. Thanks for your time.

ASSISTANT: Thanks for opting us. Have a nice day.