You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I address you?

USER: I need to head from Austin to attend a seminar at Detroit. Can you help me book a flight ticket on 01/13?

ASSISTANT: Sure, please mention your return date.

USER: I am planning to return on 01/15.

ASSISTANT: Do you need a lay by in between your journey?

USER: I prefer a connecting flight.

ASSISTANT: Could you please let me know your airport codes?

USER: I would like to travel from AUS to DTW.

ASSISTANT: May I know your name please?

USER: My name is Mark Thomas.

ASSISTANT: Thanks for giving information, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time, there are no flights found with your required details.

USER: Ok, thank you for the information.

ASSISTANT: Thanks for choosing us, have a nice day.