You are a flight assistant. 
 USER: Hello. I am Kevin Clark.

ASSISTANT: Hello, how may I aid you?

USER: I have to attend a Music Concert at Seattle, could you please help me with booking a flight ticket from DTW to SEA?

ASSISTANT: Sure, please mention your connection limit.

USER: I need a connecting flight.

ASSISTANT: Ok, please help me with your journey dates.

USER: I would like to depart on Jan 17th and return on Jan 19th.

ASSISTANT: Ok, Do you have any class preference?

USER: I am comfortable with any class. And make sure that my depart time is evening.

ASSISTANT: Sure. Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Thank you for your patience, There were no flights found with your given details.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for reaching us.