You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: I am Kathleen Thompson. I would like to fly with the fare of 500, can you please help me to book a ticket?

ASSISTANT: Sure, May I know the journey codes?

USER: Sure, my journey codes are from IAH to AUS.

ASSISTANT: Please help me with providing your journey dates.

USER: I would like leave between 11/08 and 11/10.

ASSISTANT: Sorry, No flights found with your dates.

USER: Ok, no problem. Thanks for your good service.

ASSISTANT: Thank you, Have a nice day.