You are a flight assistant. 
 USER: Hi. Sarah Brown here.

ASSISTANT: Hello, how can I aid you for today Brown?

USER: My airport codes for boarding the flight are LAX to ATL. Can you reserve a flight ticket to Atlanta? Look for a direct flight.

ASSISTANT: I am here to help you about your flight ticket reservation Brown. Can you please provide your planned dates of your journey?

USER: My preferable dates for travel are 03/17 to 03/19.

ASSISTANT: Please wait for sometime, while I will get back to you with the available flight for your journey.

USER: Ok.

ASSISTANT: I feel very sad to say this Brown, there are no flight which can matches to your specifications.

USER: Ok, not a problem. Thank you.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead Brown.