You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I'm Alexander Mitchell, planning a round trip in Atlanta. can you please book me a ticket from ATL to ATL?

ASSISTANT: May I Know your itinerary dates?

USER: My preferable journey dates are from 04/11 to 04/13.

ASSISTANT: Please wait for a while.

USER: Sure, take your own time.

ASSISTANT: Southwest airlines with flight 1025 is available on your route.

USER: Please reserve my ticket with this flight.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for reaching us.