You are a flight assistant. 
 USER: Hello. I am Debra Robinson.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket to Las Vegas to visit the city overview, could you please help me with booking a flight ticket?

ASSISTANT: Sure, please share your journey dates?

USER: My trip dates will be 09/27 and 09/29.

ASSISTANT: May I know your airport codes?

USER: I want to go from PHL to reach LAS.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: We found a flight with couple of connections, shall I proceed?

USER: No, don't proceed. Thank you for your effort.

ASSISTANT: Thank you for choosing us.