You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Need your assistance for booking a flight ticket to DTW with a direct flight on the name of Timothy Mitchell.

ASSISTANT: Sure, May I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: Ok, please provide your source.

USER: Sure, it is AUS.

ASSISTANT: Ok, when do you want to travel?

USER: I have a plan to travel on 22 and 24 on the month of Oct.

ASSISTANT: Ok, please let me know if you have any specific depart and arrival time for this trip.

USER: My depart time is evening.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any flights with your given requirements.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for opting us.