You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight  ticket from LGA to LAS, can you please help me?

ASSISTANT: Sure, help me with the trip dates?

USER: My planned dates are Oct 21 and Oct 23.

ASSISTANT: Do you have any preferences?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: Please book a ticket under the name Edward Parker.

ASSISTANT: Sorry, we did not find any flights running in your desired routes.

USER: That's fine, thank you for checking.

ASSISTANT: Thank you for availing us.