You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to fly from LAS to JFK. Can you book a flight from that route?

ASSISTANT: Sure. Tell me your travel dates please?

USER: My planned travel dates are 02/14 and 02/16.

ASSISTANT: May I know your name please?

USER: Sure, David Gonzalez here.

ASSISTANT: Are you looking for a stopover in your journey?

USER: I want a flight with single connection.

ASSISTANT: Any other preferences?

USER: No more, thank you.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: No issues, thank you for the information.

ASSISTANT: Thank you.