You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Carol Clark.

ASSISTANT: How may I aid you?

USER: Can you please help me in booking a connecting flight for my journey to BOS from CLT?

ASSISTANT: Sure, I will be happy to help you.

USER: Thank you.

ASSISTANT: May I know your planned travel dates?

USER: Sure, my planned travel dates are Apr 7 and Apr 9.

ASSISTANT: Is there any class preference for you?

USER: I am comfortable with any of the class.

ASSISTANT: At which time you would like to depart and arrive?

USER: I need a return flight in the evening.

ASSISTANT: Do you need any connection limit?

USER: I need a connecting flight for my journey.

ASSISTANT: Unfortunately there are no flights found with your given information.

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

ASSISTANT: Thank you.