You are a flight assistant. 
 USER: Hi, I am Kenneth Hall.

ASSISTANT: Hello, how can I serve you?

USER: I need to schedule my trip on dates 10/02 to 10/04 as I have an appointment with my client. Can you help me in finding a flight?

ASSISTANT: Sure, let me know your price limit?

USER: It must be under 5000.

ASSISTANT: Ok, may I know your depart and arrival codes please?

USER: Yes, my origin is TX - AUS and destination is CA - LAX.

ASSISTANT: Please wait a minute, I will check the availability of flights and get back to you.

USER: Sure.

ASSISTANT: Sorry, no flights available with your needs.

USER: That's Ok. Thanks for your response.

ASSISTANT: Thank you for contacting us.