You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony Campbell.

ASSISTANT: What service that you are expecting from our travel agency?

USER: I am expecting some help from your agency in flight ticket booking, can you help me?

ASSISTANT: Sure, I can help you with the ticket booking. Can you please provide me your travel airport codes?

USER: Sure, my source codes are CLT and JFK.

ASSISTANT: Ok, when do you want to travel?

USER: I have planned my dates on 06/25 and back on 06/27.

ASSISTANT: Ok, please wait a minute while I am searching the flight availability.

USER: Sure.

ASSISTANT: Sorry to inform you, there are no available flights in this route on the dates you have provided.

USER: Sad to hear from your end, that's fine. Thank you for your help.

ASSISTANT: You are most welcome. Have a nice day.