You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I want to travel from LGA to DEN. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am here to assist you. Please let me know your travelling dates.

USER: I want to travel in the flight on Nov 01 and Nov 03.

ASSISTANT: Do you prefer any lay by in between journey?

USER: I want to travel in a connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: No.

ASSISTANT: May I know your good name?

USER: Elizabeth Miller.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: That's ok. Anyways, thank you.

ASSISTANT: Thank you for availing us.