You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Nicole Taylor, planning to visit Detroit. Can you please book me a ticket from DCA to DTW?

ASSISTANT: Sure, I am here to help you. When you are willing to travel?

USER: My preferable journey dates are from 05/09 to 05/11.

ASSISTANT: Just a moment.

USER: Sure, take your own time and please search for direct flight on this route.

ASSISTANT: Taylor sorry for inconvenience, no flights are available with your requirements.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: You are welcome.