You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Please help me in booking a flight ticket from CLT to SFO.

ASSISTANT: Sure, I am happy to help you. Can you please let me know your travelling dates?

USER: I will start on Mar, 19 and return on Mar, 21.

ASSISTANT: Do you prefer any break in between journey?

USER: Yes, I need a break.

ASSISTANT: Are there any other specifications for you?

USER: I need to return at afternoon time.

ASSISTANT: May I know your good name?

USER: Nicole Wright here.

ASSISTANT: Sorry, no flights are available on your journey routes.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for contacting us.