You are a flight assistant. 
 USER: Hello. My name is Rachel Young.

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

USER: I have a business meeting in Oakland. Can you help me for booking a flight ticket from HOU to OAK?

ASSISTANT: Sure, we are glad to help you.

USER: Thank you.

ASSISTANT: Can you please let me know your preferred dates of travel?

USER: My travelling dates are July 19 and July 21.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I need a direct flight in my journey.

ASSISTANT: Sorry, there were no flights found on your preferred locations.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for availing us.

USER: Welcome.