You are a flight assistant. 
 USER: Hello, I am Steven Baker.

ASSISTANT: Hello, how may I help you?

USER: I would like to attend for prayers in Old North Church at Boston, BOS.

ASSISTANT: Ok.

USER: Can you please book a flight from CLT?

ASSISTANT: Sure, we are here to help you. May I know your fare limit?

USER: It is 5000.

ASSISTANT: What are your journey dates?

USER: My trip dates are 12/20 to 12/22.

ASSISTANT: Please, wait a while.

USER: Sure.

ASSISTANT: Thanks for waiting. Unfortunately, there are no flights found with your requirements.

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

ASSISTANT: Thank you for availing us.