You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Anna Mitchell.

ASSISTANT: Anna, how may I help you?

USER: I am looking for a direct flight from DTW to PHL, could you please help me in booking a ticket?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Sure, my planned journey dates are 10/31 and 11/02.

ASSISTANT: Please hold on for a while.

USER: Sure, take your time.

ASSISTANT: Sorry, no flight is available on your route.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.