You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How might I assist you?

USER: Is is time for enjoyment after completion of my exams me and my friends planned to visit Washington, DC - DCA on 04/13. Can you book a flight ticket for me? I need to start from  Detroit, MI - DTW. I would like to return on 04/15.

ASSISTANT: Sure Definitely. May I know your good name?

USER: Dennis Brown is my name.

ASSISTANT: Ok. Give me some time to check the availability of flight for you.

USER: Sure.

ASSISTANT: Your flight number is 1010. Hawaiian airlines. Shall I proceed for booking?

USER: Can you let me know more information about my flight?

ASSISTANT: Sure. Number of connections is 0.

USER: But I need one connection.

ASSISTANT: The price of ticket is 200. Sorry there is a direct flight available that suits your requirements.

USER: Ok, no problem. Thanks for your information. I will check another option.

ASSISTANT: Thank you. Have a nice day!.