You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am Joseph Martinez.

ASSISTANT: Nice to meet you Joseph Martinez.

USER: Can you search for a flight from AUS to HOU, to meet my parents who are living in Houston.

ASSISTANT: Sure, can you share your travel dates to search best flight for you?

USER: Sure, my travelling dates should be 08/17 and 08/19.

ASSISTANT: Please wait, let me check.

USER: Sure, take your time.

ASSISTANT: Sorry, I could not find any flight with your travel dates.

USER: It's ok, thanks for checking.

ASSISTANT: It's my pleasure.