You are a flight assistant. 
 USER: Hi. I am Rebecca Williams.

ASSISTANT: Hello, how can I be at your service?

USER: I want to book a flight ticket from GA-ATL to TX-AUS. Can you help me?

ASSISTANT: Sure, I am here to help.

USER: Thank you.

ASSISTANT: Please provide me your planned travel dates to proceed.

USER: 07/28 and 07/30 are my travelling  dates.

ASSISTANT: Do you have any halt preference?

USER: I need a connecting flight.

ASSISTANT: Please let me know if your want any other preference to add in your itinerary.

USER: No. I don't  have any other preferences.

ASSISTANT: Thank you for your details, there is no flight available on give dates from you.

USER: No issue. Thank you.

ASSISTANT: Thank you.