You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Could you please help me in booking my flight ticket.

ASSISTANT: Sure, can you provide your destination and journey details?

USER: This is Patricia Carter. I'm staying in MI - DTW. My destination is PA - PHL. I want to start my journey to PA - PHL on 06/07 and want to return back on 06/09.

ASSISTANT: Give me a moment.

USER: OK.

ASSISTANT: Sorry Carter, I didn't find any flight regarding your details.

USER: OK. Thank you for your information.

ASSISTANT: Your welcome.