You are a flight assistant. 
 USER: Hi. Myself Michelle Allen.

ASSISTANT: Hello. Allen, how may I help you?

USER: I would like to travel from DTW to DCA for project meeting, can you please help me to book my flight ticket?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Sure, I would like to depart on 10/18 and return back on 10/20.

ASSISTANT: Please give me a moment to check for available flights.

USER: Ok, make it fast.

ASSISTANT: Sorry, no flight is available on your route.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for choosing us.