You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I assist you?

USER: I want to visit Detroit to meet my friend on his birthday party, and give him a surprise at the Rolling Pub. Can you assist me in booking my flight ticket?

ASSISTANT: Sure, please share me your travel dates.

USER: I am willing to travel on 09/21. And I intend to revert on 09/23.

ASSISTANT: Kindly mention your airport codes.

USER: I want to head from Washington, DC - DCA. Destination is to MI - DTW.

ASSISTANT: Sorry for the inconvenience, there are no flights found on your requested dates.

USER: Ok, no issues.

ASSISTANT: Can I have your name please?

USER: I am Linda Edwards.

ASSISTANT: Thank you.

USER: Thank you for the instant response without delay.