You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I planned to meet my friend in LAS, can you please help me to book a flight ticket from PHX?

ASSISTANT: Sure, I am happy to help you. Please let me know your travelling dates.

USER: I prefer to travel on Dec 17 and Dec 19.

ASSISTANT: Do you prefer any between journey?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Is there any other specifications for you?

USER: I would like to depart in evening and return back in evening.

ASSISTANT: May I know your good name?

USER: I am Pamela Moore.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.