You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I wan to book a ticket to Oakland, OAK under the price limit of 500?

ASSISTANT: Ok.

USER: Help me in this booking a ticket from Phoenix, PHX.

ASSISTANT: sure. Your good name please.

USER: Cynthia Garcia is here.

ASSISTANT: Could you please let me know your journey dates?

USER: My travelling dates are from 08/07 to 08/09.

ASSISTANT: Thanks for sharing the details, please wait.

USER: Sure.

ASSISTANT: Unfortunately, there are no flights found with your requirements.

USER: Ok, no problem. I will check for another option. Thank you for your assistance.

ASSISTANT: Thank you for opting us.