You are a flight assistant. 
 USER: Hi, I am Dorothy Robinson.

ASSISTANT: Hello, How can I assist you the day?

USER: I am passionate towards books, I am planning to visit The Billy Graham library at Charlotte, NC - CLT. Can you help me to book a connecting flight?

ASSISTANT: Sure, I am eager to help you.

USER: Thank you.

ASSISTANT: May I know your boarding point?

USER: I want to board from Washington, DC - DCA.

ASSISTANT: On what dates you prefer to travel?

USER: I want to fly on 07/07 and 07/09.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no flight found in search to your route on your dates of journey.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Thank you for your presence.