You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, what can I do for you today?

USER: Can you please reserve me a flight ticket from IAH to CLT?

ASSISTANT: Sure, let me know your travel dates?

USER: My trip dates are 10/11 - 10/13.

ASSISTANT: Do you have any requirements?

USER: I need a direct flight which departs in the afternoon.

ASSISTANT: Can you mention your name please?

USER: Deborah Roberts here.

ASSISTANT: Sorry, no flights found as per your requirement.

USER: No issues, thank you.

ASSISTANT: Thank you for reaching us.