You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you book a direct flight from HOU to OAK to attend a conference meeting?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Oct, 14 and Oct, 16 are my travel dates.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: I don't have any specific timings.

ASSISTANT: Do you  prefer any specific class to travel?

USER: No, thank you.

ASSISTANT: Are you looking for any connecting flight?

USER: I already mentioned above.

ASSISTANT: Can I have your good name please to proceed further?

USER: Linda Rodriguez here.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry Linda Rodriguez, no flight is available to you on your dates.

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

ASSISTANT: Thank you for choosing us, have a good day.