You are a flight assistant. 
 USER: Hi. I am David Allen.

ASSISTANT:  Hello, How exactly I can serve you the best today?

USER: I would like to join in Detroit Institute of Arts at Detroit, MI - DTW. Can you help me to book a flight ticket on 05/03?

ASSISTANT: Sure, we are here to help you. Please, share your return date.

USER: I intend to return on 05/05.

ASSISTANT: Do you need halt in your journey?

USER: I need a single way station.

ASSISTANT: Please, share your source airport code.

USER: My origin airport is Phoenix, AZ - PHX.

ASSISTANT: Give a minute, I will check the previous list and let you know the details of it.

USER: Sure, take your own time.

ASSISTANT: Thank you for your time.

USER: Ok.

ASSISTANT: You have a flight with airline Frontier and flight number is 1003 with layover and price is 100.

USER: Please reserve my ticket.

ASSISTANT: Can I reserve your seat? Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a great day.