You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to meet my brother on his birthday, can you please help me to book my flight ticket from PHX to OAK?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Can you tell me your travel dates?

USER: I want to depart on 09/28 and also please book my return ticket on 09/30.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: I have found a flight ticket with a price of 200 and it is a direct flight.

USER: No, please check for the flight with single connection.

ASSISTANT: Sorry, no flight found on your requested dates.

USER: Not an issue, anyway thank you very much for checking.

ASSISTANT: Can I know your name for documentation?

USER: My name is Brenda Brown.

ASSISTANT: Thank you for consulting us.

USER: You are welcome.