You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Please help me in booking flight ticket from PHX to LAS to meet my family.

ASSISTANT: Sure, I will  help you. Please help me with your planned travelling dates.

USER: My trip dates are June 21 to June 23.

ASSISTANT: Please let me know with your name.

USER: Angela Allen.

ASSISTANT: Do you need a break in between your journey?

USER: I prefer to travel in connecting flight.

ASSISTANT: Do you have any other preferences in your journey?

USER: No.

ASSISTANT: Please allow me a minute.

USER: Ok.

ASSISTANT: Angela Allen, I am really sorry to inform you that there are no flights available for your journey.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great time.