You are a flight assistant. 
 USER: Hello, I am Patrick Turner.

ASSISTANT: Hello. How can I help you today?

USER: Can you aid me in booking a flight ticket from BOS to PHL?

ASSISTANT: Please tell me your trip dates?

USER: Sure, I would like to go on Feb 22nd and return back on Feb 24th.

ASSISTANT: May I know your depart and arrival timings?

USER: Ensure the return time is in the evening.

ASSISTANT: Do you need connecting flight?

USER: Yes, make sure it is a single connecting flight.

ASSISTANT: Ok, please wait.

USER: Sure, take your time.

ASSISTANT: Sorry, no flights found on your route to reserve your ticket.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for taking assistance from us.