You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am David Martinez.

ASSISTANT: Ok.

USER: I want to book a flight ticket to Washington DC-DCA, help me in booking my flight ticket from Detroit MI-DTW.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please, share your starting journey date.

USER: 03/03 is my starting date.

ASSISTANT: Kindly, mention your fare limit.

USER: I can spend up to 500.

ASSISTANT: May I know your return date of your journey?

USER: My return date would be 03/05.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: Sure.

ASSISTANT: You have a flight with airline Spirit and flight number is 1008 with a halt and price is 100. Can I reserve your seat?

USER: Sure, please proceed.

ASSISTANT: Your reservation is done.

USER: Thank you.

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