You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Will you help me in booking the flight ticket from LAX to DTW?

ASSISTANT: Can you share your trip dates?

USER: My preferable journey dates are Apr 23 and Apr 25.

ASSISTANT: Do you need any connections?

USER: I need a flight with single connection.

ASSISTANT: Are there any other preferences?

USER: No, thank you for asking.

ASSISTANT: May I know your name?

USER: Myself Helen Nelson.

ASSISTANT: Sorry, there is no flight found under your details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.