You are a flight assistant. 
 USER: Hello. I am Mary Rodriguez.

ASSISTANT: Hello, what can I do for you Mary Rodriguez?

USER: I am planning to go to brewery tour at Austin, AUS. Can you please book a direct flight?

ASSISTANT: Sure, I will help you in booking. Can you please assign your journey dates?

USER: My travelling dates are 02/21 to 02/23.

ASSISTANT: Please share your price limit.

USER: Price limit should be under 1000.

ASSISTANT: Ok, may I know your source?

USER: Source code is Charlotte, CLT.

ASSISTANT: Sorry, no flights were running currently on your schedule.

USER: No problem. Thank you.

ASSISTANT: Thanks for choosing us.