You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend business meeting at ATL, can you please help me with booking a flight ticket from CLT?

ASSISTANT: Can I know your desired travel dates please?

USER: I would like to take off on Apr 27 and return on Apr 29.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I am looking for a connection flight.

ASSISTANT: Do you have any class preference?

USER: I would prefer economy class.

ASSISTANT: May I know your name please?

USER: My name is Dorothy Hall.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.