You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I aid you?

USER: Can you please help me in booking my flight ticket from EWR to LAS?

ASSISTANT: Sure, May I know your travelling dates?

USER: My planned travel dates are July 11-13.

ASSISTANT: Let me know your connection limit.

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other preferences?

USER: I want to return in the afternoon.

ASSISTANT: May I know your name?

USER: Helen Turner is my name.

ASSISTANT: Sorry, There are no flights found on your data.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.