You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Rachel Harris.

ASSISTANT: Yes, Rachel.

USER: I have to attend a meeting in Austin, can you please help me in booking flight ticket on these dates from 03/21 to 03/23?

ASSISTANT: Sure, may I know your airport codes please?

USER: I want to travel from CLT to AUS.

ASSISTANT: Ok, give me a moment.

USER: It's very important meeting, so I want direct flight.

ASSISTANT: Rachel, sorry to inform you that there is no flight available with 0 connection right now.

USER: It's ok. Thank you for your information.

ASSISTANT: Thank you for reaching us, have a good day.