You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Sandra White here. Could you please help me in booking a flight ticket to Austin from Phoenix?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Please share me your trip dates?

USER: My trip dates are June 28 and June 30.

ASSISTANT: Do you need any break in your journey?

USER: Yes, I need a break.

ASSISTANT: Is there any class preference for you?

USER: No, thanks for asking.

ASSISTANT: Sorry to inform you that, there are no flights found with your requirements.

USER: Not an issue, thank you for your  information.

ASSISTANT: Thank you for choosing us.