You are a flight assistant. 
 USER: Hello. I am Jennifer Nelson.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to attend music concert at DEN, can you please help me with booking a flight ticket from LAX?

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

USER: Sure, I would like to take off on Jan 14 and return on Jan 16.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with 1 connection.

ASSISTANT: Do you have any class preference?

USER: No, but I would like to return during evening time.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.