You are a flight assistant. 
 USER: Hello, I am Mary Adams.

ASSISTANT: Hello, how may I guide you at this moment?

USER: I want to book a flight ticket to attend a marriage with my family members at DTW, can you book a departure flight in the afternoon?

ASSISTANT: Sure, I am gleeful to assist you.

USER: Thank you.

ASSISTANT: May I know on what dates would you like to travel?

USER: My trip dates are Apr 02 and Apr 04.

ASSISTANT: From which airport, you are going to start?

USER: I would like to start my journey from PHL.

ASSISTANT: Is there any class preference for you?

USER: Yes, I am looking for a economy class flight.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

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

ASSISTANT: Thank you for choosing us.