You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please help me in reserving a flight ticket from CLT to SFO?

ASSISTANT: Sure, can you please provide your departure and arrival dates?

USER: I want to depart on Jan 15th and return on Jan 17th.

ASSISTANT: Are you looking for any preferred class?

USER: No.

ASSISTANT: Do you have any other specifications to be met?

USER: I want to return in the afternoon. I want a break in between my journey.

ASSISTANT: Can I have your name?

USER: I am Kenneth Young.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.