You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please help me in booking a flight ticket to LAS from LAX on the name of  James Robinson?

ASSISTANT: Sure, when are you planning to start and return on?

USER: I would like to start on Feb 20 and need to return on Feb 22.

ASSISTANT: Do you need a connecting flight?

USER: I need a connecting flight.

ASSISTANT: There are no flights found with the given details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.