You are a flight assistant. 
 USER: Hello. Andrew Phillips here.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please help me in booking a flight ticket from JFK to DEN?

ASSISTANT: Sure, we are perky to help you. Do you prefer any halt in between your journey?

USER: Yes, I need a connecting flight.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travel dates are from Apr 18 to Apr 20.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Thanks for your precious time. We found Frontier airline fare of 100. Shall I proceed for booking with single stopover flight?

USER: Please make sure that my return time must be in the afternoon.

ASSISTANT: Your ticket has been confirmed with airline number 1005 and return time is afternoon.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.