You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please make a reservation with the name of Joseph Young?

ASSISTANT: Sure, can you share your travel dates?

USER: My journey dates are on May 13th and 15th.

ASSISTANT: May I know your specific airport codes?

USER: My airport codes are, CLT to SFO.

ASSISTANT: Do you have any connection limit?

USER: I prefer a  flight with single connection.

ASSISTANT: Is there any other specifications for you?

USER: My depart time should be in the morning.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.