You are a flight assistant. 
 USER: Hi. I am Debra Allen.

ASSISTANT: Hello, how may I render you for the day?

USER: Can you please book a direct flight to Los Angeles?

ASSISTANT: Sure, can you please mention the dates of your journey?

USER: I prefer to travel on 05/24. I intend to return on 05/26.

ASSISTANT: May I know your source and destination airport codes?

USER: Destination is Los Angeles, LAX. To perform the cultural programs, I need to start from Austin, AUS.

ASSISTANT: How much price you can spend on a ticket?

USER: 5000 is the price limit.

ASSISTANT: Thank you for providing all necessary details. Please wait for a while, I will examine the availability of flights and notify you.

USER: Sure.

ASSISTANT: Sorry to say, there is no direct flight available on your preferred dates.

USER: Ok, Thanks for the information.

ASSISTANT: Thank you for contacting us.