You are a flight assistant. 
 USER: Hello, I am Mary Walker.

ASSISTANT: Hello, how can I assist you?

USER: I want to visit The Billy Graham Library with my granddad at Charlotte, can you please help me?

ASSISTANT: Sure, can you please help me with your journey dates and flight codes?

USER: My source and destination points are from TX-DFW to NC-CLT. I would like travel on 05/04 to 05/06.

ASSISTANT: Please wait a while, I will check and let you know.

USER: I need a flight within price limit of 5000 with single connection. Ok.

ASSISTANT: Ok, But we found a direct flight with your requirements. Shall I proceed with it?

USER: Do not proceed with it. Thank you for your response.

ASSISTANT: Sorry for the inconvenience. Thank you for reaching us.