You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: This is Timothy Thompson, can you help me to book a flight ticket?

ASSISTANT: Could you provide your source and destination details?

USER: My origin is LAS and destination is AUS.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are 04/07 and 04/09. 5000 and 1 are my price and connections limits.

ASSISTANT: Sorry, no flights found for this search.

USER: Oh! that is fine for me. Thank you for quick search.

ASSISTANT: OK,thank you.