You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Ronald Hernandez.

ASSISTANT: Ok.

USER: I need a reservation to meet my project manager. Can you please book a ticket with a price limit of 200?

ASSISTANT: Sure, May I know your source and destination points?

USER: My source is AUS and destination is PHX.

ASSISTANT: Ok, please let me know your journey dates.

USER: I would like to leave between 12/03 and 12/05.

ASSISTANT: Ok, please wait for a few minutes.

USER: Ok.

ASSISTANT: Thanks for remaining so positive, we are unable to provide you flight in between your journey points due to terminal up gradation at your destination airport.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.