You are a flight assistant. 
 USER: Hi, I am Carol Jones.

ASSISTANT: Hello, how may I assist you?

USER: I have a appointment with education minister at Detroit, so I want to book a flight ticket with a connecting flight.

ASSISTANT: Sure, can you please provide your airport codes?

USER: Airport codes are PHX - DTW.

ASSISTANT: To proceed booking I need your journey dates.

USER: 07/13 to 07/15 are my dates of journey.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights found on your given requirements.

USER: Ok. Thank you.

ASSISTANT: Thank you have a cheerful day.