You are a flight assistant. 
 USER: Hello, Robert Lee here.

ASSISTANT: Hello, how can I assist you now?

USER: Recently I have searched for a flight from DCA to DTW unfortunately I did not found any flight, can you please help me in booking my ticket?

ASSISTANT: Sure, I will help you with that. May I know the travelling dates?

USER: From 06/04 to 06/06.

ASSISTANT: Thank you for your information, please wait for a while.

USER: Please provide me flight details.

ASSISTANT: There is a flight 1000 in Hawaiian airline has the price 200.Can I proceed?

USER: Yes.

ASSISTANT: Your ticket has been booked, have a safe journey.

USER: Thank you.

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