You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Alexander Mitchell here.

ASSISTANT: How can I aid you?

USER: I'm planning to visit Charlotte, Can you please book a ticket from DEN to CLT?

ASSISTANT: Sure, may I know your travel dates please?

USER: Sure, my planned departure and return travel dates are 17th and 19th of June.

ASSISTANT: Do you have any other specifications?

USER: Yes, my connection limit is 1.

ASSISTANT: Please, wait for a while.

USER: Sure, take your own time.

ASSISTANT: Frontier airlines is providing you the connecting flight in economy class, shall I proceed?

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

ASSISTANT: Your ticket has been reserved with flight-1009.

USER: Thank you so much for your help.

ASSISTANT: Thank you for reaching us.