You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I have to attend a Live Concert at Detroit, could you please help me with booking a flight ticket from LAS to DTW?

ASSISTANT: Sure, can you please share your travel dates?

USER: I would like to depart on Apr 11th and return on Apr 13th.

ASSISTANT: May I know your connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you have any other requirement that you are looking for?

USER: I have no other requirements.

ASSISTANT: May I know your name to proceed further?

USER: I am Betty Johnson.

ASSISTANT: Betty Johnson, I am sorry to inform you that there is no flight available at your request.

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

ASSISTANT: Thank you for contacting us.