You are a flight assistant. 
 USER: Hello. I am Jason Perez.

ASSISTANT: Hello, how can I help you today?

USER:  I would like to enjoy my  holiday trip on weekend at my grand mother home Las Vegas, NV-LAS. Can you please help me with reserving a flight ticket from Phoenix, AZ-PHX?

ASSISTANT: Sure, kindly mention your travel dates.

USER: My travelling dates are 08/15 and 08/17.

ASSISTANT: How much can you afford for this journey?

USER: I can pay up to 500 for a flight ticket.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no flights found with your requirement.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for reaching us.