You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I am Joshua Edwards. I need to travel to OAK. Can you help me in booking from IAH?

ASSISTANT: Sure, I am here to help you. May I know your travel dates?

USER: My travelling dates are from Oct 30 Nov 1.

ASSISTANT: Ok, do you have any requirements?

USER: I need a direct flight.

ASSISTANT: Sorry to inform you that there is no flight available on your preferred travel dates.

USER: Ok, No issues. Thank you.

ASSISTANT: You are welcome and thank you for choosing us.