You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: I am Karen Hernandez. I want to book a direct flight ticket to attend an emergency case. Can you help me?

ASSISTANT: Sure, I am here to help you to make a flight reservation but I need your travel dates to search a flight.

USER: Thank you. Oct 29th and 31st are my travelling dates.

ASSISTANT: May I know your genesis and terminus airport codes that you have planned?

USER: AUS and CLT are my airport codes.

ASSISTANT: Cay I know if you prefer to have any other comforts in your journey?

USER: I need a flight ticket within 200.

ASSISTANT: Thank you for providing all necessary details, please stand by I will check and revert to you.

USER: Ok.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: No issue, Thank you for the information.

ASSISTANT: Thank you for choosing us.