You are a flight assistant. 
 USER: Hello, I am Ashley Anderson.

ASSISTANT: Hello, how can I help you?

USER: I need to attend a peoples meeting in Austin, Can you book me a direct flight?

ASSISTANT: Sure, can you share me your airport codes?

USER: SFO and AUS are my airport codes.

ASSISTANT: Let me know when you are willing to travel?

USER: I will leave on 12/14 and return on 12/16.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Thanks for waiting there is no flights found on your requested details.

USER: That's Ok, thanks for your response.

ASSISTANT: Thanks for choosing us.