You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I am planning to visit Detroit historical museum. Could you book a ticket from LAS to DTW?

ASSISTANT: Sure, I can help you with that. Can you please help me with your travelling dates?

USER: My travel dates are 12/28 and 12/30.

ASSISTANT: May I know your name to proceed further?

USER: My name is Alexander Anderson.

ASSISTANT: Ok, let me check for the availability of flight.

USER: I am looking for a flight with 1 connection as my friend is joining me.

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

USER: No problem. Thank you for assisting me.

ASSISTANT: You are welcome.