You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you now?

USER: can you please help me in booking my flight ticket from CLT to SFO?

ASSISTANT: Sure, please share me your planned journey dates?

USER: My travelling dates are Mar 7 to 9.

ASSISTANT: May I know your connection limit?

USER: I prefer single connecting flight.

ASSISTANT: Do you have any other requirement?

USER: I want to depart at afternoon.

ASSISTANT: May I know your good name?

USER: My name is Samuel Nelson.

ASSISTANT: Thank you for the details, sorry there is no flight found on your given journey data.

USER: Thank you for your service.

ASSISTANT: Thank you for visiting us, have a nice day ahead.