You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I oblige you today?

USER: I am Stephanie Martin. I need to attend workshop in Smithsonian Institution at Washington, IAD. Can you please help me in booking?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: My preferred dates of travel are from 12/19 to 12/21.

ASSISTANT: Kindly ensure your boarding point?

USER: My source is at MI-DTW.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need a stopover in between my journey.

ASSISTANT: Thanks for providing your details, please wait a moment.

USER: Ok.

ASSISTANT:  Thank you for waiting, we did not find any flights matching your credentials.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us.