You are a flight assistant. 
 USER: Hello, I am William Anderson.

ASSISTANT: Hello, how can I help you today?

USER: I need to fly from IAD to CLT to meet my friend, can you please help me to book a flight ticket?

ASSISTANT: Sure, could you please provide me your planned travel dates?

USER: My journey dates are 04/28 to 04/30.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.