You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am looking for a direct flight, could you please help me with finding a flight ticket with my requirement?

ASSISTANT: Sure, May I know the travelling dates?

USER: I would like to depart on Sept 30th and return on Oct 2nd.

ASSISTANT: Please help me with your journey codes.

USER: My source airport code is LAS and destination airport code is DFW.

ASSISTANT: Do you have any connection limit?

USER: I have already mentioned above.

ASSISTANT: Is there any other requirements?

USER: I have no other requirements.

ASSISTANT: May I know your name?

USER: I am Rebecca Brown.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for availing us.