You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Jacob Lopez here.

ASSISTANT: How may I help you?

USER: I would like to visit Charlotte for a business trip, so can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I will help you. May I know your trip dates?

USER: I would like to go on 02/06 and please book a return ticket on 02/08.

ASSISTANT: Ok. Can I know your location codes please?

USER: Sure, I want to travel from EWR to CLT.

ASSISTANT: Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you, there is no flight available on your requested dates.

USER: Oh! So sad to hear. Anyways, thank you for the information.

ASSISTANT: It's my pleasure.