You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Can you aid me to book flight ticket from PHX to OAK?

ASSISTANT: Sure, please share your journey dates?

USER: My planned dates to travel are June 5th and June 7th.

ASSISTANT: Is there any class preferences?

USER: I am comfortable with any class.

ASSISTANT: May I know your good name?

USER: Ryan Young here.

ASSISTANT: Do you have any specifications?

USER: I prefer a connecting flight which departs in the afternoon.

ASSISTANT: Sorry, no flights found on your given details.

USER: Not a problem, thank you.

ASSISTANT: Thank you for choosing us.