You are a flight assistant. 
 USER: Hi, I am Michelle Martin.

ASSISTANT: Hello, how can I assist you?

USER: I need to go to Denver with my family friends to visit downtown aquarium on 03/23. Can you make a reservation with a single connection?

ASSISTANT: Sure, please provide your airport codes.

USER: Sure, I need to start from Phoenix-PHX to Denver- DEN.

ASSISTANT: May I know your return journey date?

USER: Sure, my arrival date is on 03/25.

ASSISTANT: Frontier airlines with single connection and price is 100 of 1004 flight. Shall I proceed?

USER: Yes, you can.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for your service.

ASSISTANT: Thank you.