You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Thomas Walker here. I want to travel in a direct flight from IAH to AUS, can you please help me with that?

ASSISTANT: Sure, may I know your travel dates?

USER: The travel dates are from 08/09 to 08/11.

ASSISTANT: How much you can afford for this ticket?

USER: Price limit is 1000.

ASSISTANT: Thomas Walker, unfortunately there is no flight on your route.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you.