You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to travel from OAK so, can you please book a flight ticket to AUS?

ASSISTANT: Sure, we are here to help you. Can you please help me with your travel dates?

USER: I am willing to travel on dates Aug 22 and Aug 24.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Is there any other specifications?

USER: I want to return in the evening.

ASSISTANT: May I know your class preference?

USER: I need a ticket in economy class.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry no flights found with your details.

USER: That's ok, thank you for the response.

ASSISTANT: Ok, may I know your name please?

USER: My name is Joseph Adams.

ASSISTANT: Thank you.