You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I assist you?

USER: I scheduled my trip to Austin to visit beautiful parks over there. So, I need your help in flight reservation.

ASSISTANT: Sure,may I know your journey specifications?

USER: I would like to fly from LGA to AUS and my dates of journey are from 06/04 to 06/06.

ASSISTANT: May I know your good name please?

USER: I am Michael Anderson.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform,we do not have flight tickets matching your requirement. Thank you for giving your time. Have a nice day.

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