You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you?

USER: I am Eric White and I want to book a flight ticket to Detroit, MI- DTW.

ASSISTANT: Sure Eric, please provide your source city and dates of travel.

USER: My starting point is Austin, TX- AUS and my travelling dates are 03/10 and return on 03/12. I also have price limit as 200.

ASSISTANT: Ok, please wait a moment.

USER: ok.

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

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for approaching us. Have a nice day!.