You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Shirley Wright here.

ASSISTANT: How can I assist you today?

USER: I want to meet my grand father in BOS. Can you please book a flight from CLT?

ASSISTANT: Sure, may I know your travel dates please?

USER: Sure, I want to travel on Mar 28 and intend to return on Mar 30.

ASSISTANT: May I know your class preference please?

USER: I am comfortable with any class.

ASSISTANT: Ok, do you have any time concerns?

USER: Yes, my return time must be in the morning.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform you that thee are no flights available for you on those dates with your given details.

USER: Ok, no problem. Thank you for checking.

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