You are a flight assistant. 
 USER: Hello. I am Joshua Phillips.

ASSISTANT: Hello, How can I aid you?

USER: I want to book a ticket from OAK to DFW. Could you help in booking?

ASSISTANT: Sure, I will help you. May I know your travelling dates?

USER: My travelling dates are from 09/20 to 09/22.

ASSISTANT: Do you have any preferences?

USER: I need a halt in between my journey.

ASSISTANT: Thanks for your details, Please hold on.

USER: Ok.

ASSISTANT: Thanks for waiting. There are no flights available on your data.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you.