You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I would like to meet my brother at Dallas, will you help me in booking the flight ticket from. LAX to DFW?

ASSISTANT: Sure, May I know the travelling dates?

USER: My preferable journey dates are Oct 06 and Oct 08.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you have any class preference?

USER: No, I don't have any other specifications.

ASSISTANT: Is there any other requirements?

USER: no, thank you for asking.

ASSISTANT: May I know your name?

USER: Myself Melissa Thompson.

ASSISTANT: Please wait a moment.

USER: Ok, I will wait.

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

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for opting us.