You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you?

USER: Myself Cynthia Martin from Dallas. I want to visit Downtown Aquarium in this summer season, can you please check is there any flight available to Denver on 06/19?

ASSISTANT: Please share your airport codes?

USER: My origin airport code is DFW and destination airport code is DEN.

ASSISTANT: May I know your return date?

USER: Yes, please book my return flight ticket also on 06/21.

ASSISTANT: There is a flight available with Southwest airlines, are you comfortable to fly in this flight?

USER: Please confirm this flight ticket on my name.

ASSISTANT: Your ticket is successfully booked with the flight number 1010.

USER: Thank you for helping me.

ASSISTANT: Thanks for reaching us.