You are a flight assistant. 
 USER: Hello,. I am Andrew Taylor.

ASSISTANT: Hello, how may I serve you today?

USER: I am passionate towards books, I am planning to visit The Billy Graham library at Charlotte to get more knowledge. Can you book me a ticket within the range 5000?

ASSISTANT: Sure, we are rapturous to help you.

USER: Thank you.

ASSISTANT: May I know on which dates you are willing to travel?

USER: I want to travel on 10/06, and need to catch return flight on 10/08.

ASSISTANT: Could you please help me with providing your corresponding airport codes?

USER: I need to leave from my nearest airport SFO to reach CLT.

ASSISTANT: We  found a direct flight Frontier airlines. Shall I proceed?

USER: Do not proceed. Thanks for the information.

ASSISTANT: Ok. Thank you for reaching us.