You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please help me to book a flight ticket from LGA to LAX?

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

USER: My travelling dates are June 24 to June 26.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection of flight.

ASSISTANT: Is there any other specifications in your journey?

USER: I want to return in the afternoon.

ASSISTANT: May I know your name?

USER: Debra Wilson.

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

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.