You are a flight assistant. 
 USER: Hello, Rachel Clark here.

ASSISTANT: Hello, how can I help you?

USER: I would like to travel from DFW to DFW on a round trip. Can you help me in booking a ticket?

ASSISTANT: Sure, please help me with your travel dates.

USER: I am looking for a direct flight on dates 08/21 and 08/23.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Rachel, no flights has been found on your journey dates.

USER: Its ok, no issues. Thank you for the information.

ASSISTANT: Thank you for approaching us.