You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you now?

USER: I need to attend a function in Chicago, please reserve a flight ticket for me from Las Vegas.

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: The planned dates of my journey are May 20 and May 22.

ASSISTANT: May I know your connection limit please?

USER: I am comfortable to travel in a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I am comfortable to catch the departing flight which is in the afternoon time. So, please search for that.

ASSISTANT: Meanwhile, may I know your name please?

USER: My name is Michelle Harris.

ASSISTANT: I am so sorry to say, there are no flights available for your journey. Michelle Harris, thank you for choosing our services.

USER: It's ok, not an issue. Thanks a lot for checking the flights.

ASSISTANT: Have a nice day.