You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you today?

USER: I want to attend for an interview in Charlotte, so please book a flight ticket from SFO to CLT.

ASSISTANT: Sure, we are blissful to help you. When did you scheduled to travel?

USER: I will start on July 14, return on July 16.

ASSISTANT: Is there any specific time to travel?

USER: No.

ASSISTANT: Do you need any way station in your journey?

USER: I need a single connecting flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your good name please?

USER: My name is Joshua Scott.

ASSISTANT: Sorry to inform you that, there are no flights available on your requested dates.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.