You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Thomas Gonzalez. I want to meet my brother, can you please help me to book my flight ticket from CLT to JFK?

ASSISTANT: I am here to help you, can I know your travelling dates?

USER: Sure, I want to depart on 05/29 and also please book my return ticket on 05/31.

ASSISTANT: Do you have any specifications?

USER: Yes, I prefer for a single connection flight.

ASSISTANT: Please wait for some time.

USER: Sure.

ASSISTANT: Sorry, no flights are available on your desired route.

USER: Oh! That's fine. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us.