You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Dorothy Brown. I want to book a ticket from PHL to DTW to attend seminar, can you help me in booking?

ASSISTANT: Sure, may I know your travel dates?

USER: I am departing on Nov 03 and return on Nov 05.

ASSISTANT: Is there any connection limit?

USER: I need a flight with connection limit 1.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Do you any other specifications?

USER: I need a flight which depart in evening.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your specified time.

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.