You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Benjamin Lopez.

ASSISTANT: How may I aid you?

USER: I want to travel from CLT to PHX. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am here to help you. Can you please share your travel dates?

USER: I want to fly in the flight on Apr 12 and Apr 14.

ASSISTANT: Do you have any connection limit?

USER: I want to travel in a connecting flight.

ASSISTANT: May I know your depart and arrival time?

USER: My return time will be in afternoon.

ASSISTANT: Which class do you prefer for your journey?

USER: Nothing.

ASSISTANT: May I know your airline preference?

USER: I don't have any preference.

ASSISTANT: Ok, please be on hold for a moment.

USER: Ok.

ASSISTANT: Sorry, there are no flights in this route as per your travelling details.

USER: That's ok. Anyways, thank you for your help.

ASSISTANT: Thank you for choosing us.