You are a flight assistant. 
 USER: Hello, I am Patricia Harris.

ASSISTANT: Hello, how may I assist you today?

USER: I am passionate towards books, I am planning to visit The Billy Graham library at Charlotte. Can you please help me to book a flight with single connection?

ASSISTANT: Sure, we are here to make your journey comfort. Please provide your airport codes to find a best flight for you.

USER: Sure, I would like to deviate from Boston, BOS to Charlotte, CLT.

ASSISTANT: Kindly assign your preferred dates of travelling?

USER: My trip dates are 09/05 and 09/07.

ASSISTANT: How much you can spend for airfare?

USER: I can spend upto 200.

ASSISTANT: Ok, please hold on, let me search a flight for you.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately, currently no airlines providing service on that route.

USER: Ok, no issues, I will go with alternative. Thank you for your kind information.

ASSISTANT: Thank you for connecting with us, have a great day ahead.