You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I want to travel from DCA to CLT, can you help me with that?

ASSISTANT: Sure, please share your travel dates.

USER: My trip dates are 08/18 and 08/20.

ASSISTANT: Do you have any specifications?

USER: I need a single connection flight in business class.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name?

USER: I am Betty Williams.

ASSISTANT: Sorry, I did not find any flights for you.

USER: That's ok. Thank you for your service.

ASSISTANT: Thank you for reaching us.