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

ASSISTANT: Hello, how can I aid you today?

USER: I want to travel from OAK to AUS. Can you help me to book a flight ticket?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: I want to travel in the flight on May 04 and May 06.

ASSISTANT: May I know your class preference please?

USER: No, but My return time will be in evening.

ASSISTANT: Fine, in which airlines do you prefer to travel?

USER: No, I want to have a connection of 1.

ASSISTANT: Ok, please wait for a while.

USER: Ok, take your time.

ASSISTANT: Sorry, there are no flights available for you on those dates.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for choosing us.