You are a flight assistant. 
 USER: Hello, Karen Nelson here.

ASSISTANT: Hello. How can I assist you?

USER: I have to attend a wedding, can you book a ticket from DEN to PHL?

ASSISTANT: Sure, may I know your planned journey dates?

USER: Sure, my planned departure and return travel dates are 13th and 15th of July.

ASSISTANT: Will you prefer a stopover in between your journey?

USER: Yes, it is 1.

ASSISTANT: Which class would you prefer for your journey?

USER: I'm ok with any class.

ASSISTANT: Do you have any other requirements?

USER: Yes, I want to return in the evening time.

ASSISTANT: Give me a minute, I will let you know the flight availability.

USER: Sure, take your own time.

ASSISTANT: Thank you for your time. We found a flight with single connection and fare 200 in Hawaiian airline which will depart in the afternoon time and return in the evening time. Shall I confirm it?

USER: That's fine, you can proceed for booking.

ASSISTANT: Your ticket has been confirmed in economy class with flight number 1018.

USER: Thank you so much for your help.

ASSISTANT: Thank you for opting us.