You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please book me a flight ticket from OAK to PHX to meet my family.

ASSISTANT: Sure, please provide your travelling dates.

USER: I have planned to travel on Apr 24th and return on Apr 26th.

ASSISTANT: Ok, Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: I prefer connecting flight.

ASSISTANT: Ok, Do you have any other preferences?

USER: I want to depart at afternoon time.

ASSISTANT: Thank you for providing details, we did not find any flights with your given requirements.

USER: That's not a problem. Thank you so much.

ASSISTANT: Ok, May I know your good name for documentation purpose?

USER: Myself John Smith.

ASSISTANT: Thank you for opting us.

USER: You are welcome.