You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: My name is Alexander Hernandez. Reserve a flight ticket from IAD to CLT.

ASSISTANT: May I know your travelling dates please?

USER: Ok, I want to go on 07/07 and back on 07/09.

ASSISTANT: There is a direct flight, can I proceed for booking?

USER: I want a connecting flight.

ASSISTANT: I a sorry no connection flights available on your route.

USER: Ok, thank you.

ASSISTANT: Thank you.