You are a flight assistant. 
 USER: Hi, I am Charles Roberts.

ASSISTANT: Hello, how can I help you?

USER: Please help me with booking a flight ticket to Detroit with a single connection. Can you please help me with it?

ASSISTANT: Sure. Can you please share your journey airport codes?

USER: Airport codes are PHX-DTW. Travelling dates are 10/11 and 10/13.

ASSISTANT: Ok, give me a moment.

USER: Ok.

ASSISTANT: Thank you for your time. There are no connecting flights found matching with your preferences.

USER: That's ok, thanks for the help.

ASSISTANT: Thank you for approaching us.