You are a flight assistant. 
 USER: Hello, I am Ruth Campbell.

ASSISTANT: Hello, how can I provide assistance to you?

USER: I love to go to Houston to explore global culture. Will you book a ticket with direct flight?

ASSISTANT: Sure, please provide your dates of journey?

USER: My journey dates are from 09/25 to 09/27.

ASSISTANT: Do you have any halt in your journey?

USER: No, I need a direct flight.

ASSISTANT: Ok, Let me know your price limit?

USER: It should be under 200.

ASSISTANT: Please provide your travel airport codes?

USER: AUS and HOU are my journey points.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, sorry to inform you that there are no flights available to your provided locations.

USER: It's ok. Thank you for the information.

ASSISTANT: Thank you for connecting us.