You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Margaret Phillips.

ASSISTANT: How can I assist you today?

USER: I planned to meet my cousin in PHL, can you please help me to book a flight ticket from OAK?

ASSISTANT: Please share your journey dates.

USER: I prefer to travel on Oct 14 and Oct 16.

ASSISTANT: Do you need any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: May I know your depart and arrival time.

USER: I would like to return back in evening.

ASSISTANT: Do you need any other specifications?

USER: I prefer to travel in economy class.

ASSISTANT: Sorry to inform you that there are no flights available on your route.

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

ASSISTANT: Thank you for opting us.