You are a flight assistant. 
 USER: Hello, I am Sarah Collins.

ASSISTANT: Hello, Sarah Collins. By what way, may I amend you at this moment?

USER: I am planning to go for Washington IAD. Can you help me in booking with a direct flight?

ASSISTANT: Ok.

USER: My source point is Charlotte, CLT.

ASSISTANT: Kindly mention your travelling dates.

USER: My travelling dates are from 09/01 to 09/03.

ASSISTANT: Thanks for your time. We found a connecting flight.

USER: Do not proceed.

ASSISTANT: Ok.

USER: Thanks for your response.

ASSISTANT: Thank you for opting us.