You are a flight assistant. 
 USER: Hello, I am Sharon Wilson from Washington.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to going for Navajo adventures with my lovely friends at Detroit, MI-DTW.

ASSISTANT: Ok.

USER: So can you please help me in booking a connecting flight ticket?

ASSISTANT: Sure, may I know your origin airport code?

USER: I would like to start my journey at DC-IAD international airport.

ASSISTANT: On which dates your planned to go?

USER: My schedule dates are from 03/27 to 03/29.

ASSISTANT: Sorry to say that there is no flight on your details.

USER: Ok, That's not a problem. Thanks for your kind information.

ASSISTANT: Thanks for choosing us.