You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to watch sports live events in Detroit, so please book a flight ticket from LAX to DTW.

ASSISTANT: Your travelling dates please?

USER: I will start on July 26, return on July 28.

ASSISTANT: May I know your name?

USER: My name is Brenda Wilson.

ASSISTANT: Do you have any specifications?

USER: My depart time should be evening.

ASSISTANT: Do you have any other preferences?

USER: I want normal cost airline.

ASSISTANT: May I know your name please?

USER: Already mentioned above.

ASSISTANT: I am sorry no flights found on your route.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.