You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to book a ticket from DCA to CLT. Can you please help me out?

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: I am planning to travel on Aug 05 and return back on Aug 07.

ASSISTANT: May I know your name to proceed further?

USER: My name is Rebecca Hall.

ASSISTANT: Do you have connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Rebecca Hall, here is a connecting flight in economy class with Hawaiian airlines. Can I proceed with it?

USER: My return time should be evening, can you check it once.

ASSISTANT: Sorry Rebecca Hall, there is no flight for your return flight.

USER: That's fine, thank you for your service.

ASSISTANT: Thank you for reaching us Rebecca Hall.