You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, can you please tell me how can I assist you?

USER: I am Charles Hernandez planning to visit Charlotte, can you help me to book a ticket on 06/14 and 06/16?

ASSISTANT: Can you please provide me your travel codes?

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

ASSISTANT: Sorry, no flights found with your details.

USER: That's fine, thank you.

ASSISTANT: Most welcome.