You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I am Eric Martin. I want to book a  flight ticket from CA-OAK to TX-AUS. Can you help me?

ASSISTANT: Sure, may I know your journey dates?

USER: 10/26 and 10/28 are my travelling dates.

ASSISTANT: Do you need any halt?

USER: I need a break in my journey.

ASSISTANT: Ok, wait a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights on your requested dates.

USER: No issue.

ASSISTANT: Thank you for choosing us.

USER: Thank you your information.