You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I want to book a flight ticket from CLT to MCO, can you help me?

ASSISTANT: Sure, can you please let me know your dates of journey?

USER: Yes, I planned my trip from Dec 13 and Dec 15 respectively.

ASSISTANT: May I know your name please?

USER: Eric Garcia here.

ASSISTANT: Please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Eric, there is no flight found as per your travelling details.

USER: That's not an issue. I will try with other agency. Anyway thank you for checking.

ASSISTANT: You are welcome.