You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: My name is Kevin Martinez. I want to attend my Step dad 60th anniversary at IAD from AUS. Can you help me in booking with in the range of 1000?

ASSISTANT: Sure, can you please provide your travelling dates?

USER: 10/03 and 10/05 are my dates of journey. I need 1 connection.

ASSISTANT: Thanks for waiting, there is no flights found with your requirements.

USER: Ok, No problem. Thanks for your assistance.

ASSISTANT: Thank you have a great day.