You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Larry Gonzalez this side, I am looking to book a ticket from OAK to AUS. Can you help me to book a ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am looking to travel on 12/06 and 12/08.

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

USER: Ok, no issues, thank you for your support.

ASSISTANT: Thank you for choosing us. Have a good day.

USER: Welcome.