You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to book my ticket from PHX to LAS. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: My planned travel dates are from Dec 21 to Dec 23.

ASSISTANT: Do you have any connection limit preference?

USER: I need a connecting flight in my journey.

ASSISTANT: Could you help me with your name please?

USER: Sure, Myself Pamela Thomas.

ASSISTANT: Sorry, there is no flight available for the mentioned dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.