You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you today?

USER: Can you please help me in booking my flight to reach DEN, as I have to meet my friends there. Can you please reserve me a flight from CLT?

ASSISTANT: Sure, may I know your travel dates?

USER: Thank you. My planned departure and arrival dates are Dec 21st and Dec 23rd respectively.

ASSISTANT: Do you need any stopover in between your journey?

USER: Yes, I prefer a single connecting flight for my journey.

ASSISTANT: Is there any other preferences?

USER: I would like to depart in the evening time only.

ASSISTANT: Ok, please wait  a minute.

USER: Ok, sure.

ASSISTANT: We found an airline Frontier with flight 1009 having a fare 100 with stopover. Shall I proceed with booking?

USER: I am ok with this flight. Please, proceed by booking.

ASSISTANT: May I know your name?

USER: My name is John Wright.

ASSISTANT: Your reservation has been confirmed with depart time in the evening.

USER: Thanks for the great service.

ASSISTANT: Thank you.