You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am Gary Martinez, can you help me searching flights on these routes AUS to CLT to attend my sister's baby shower function?

ASSISTANT: Sure, can you please provide your preferable journey dates?

USER: I am going to start my journey on 02/26 and I am going to return on 02/28.

ASSISTANT: Wait a moment please.

USER: Ok, I will wait for your reply.

ASSISTANT: Gary Martinez, there are no flights available on your provided dates due to heavy bookings.

USER: Oh! It's ok, I will complete my journey in another way.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.