You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I be there for you?

USER: I am William Parker. Can you please help me with booking a flight ticket from OAK to AUS?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are 02/04 and 02/06.

ASSISTANT: At what time would you like to departs and return?

USER: I would like to return at evening.

ASSISTANT: How many connections do you need?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, I regret to inform you that there are no flights obtained on your journey dates to book a flight ticket.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for consulting us.