You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Thomas Allen. I would like to attend for prayers in Old North Church at Boston, BOS, so can you book me a direct flight?

ASSISTANT: Sure, may I know your source code?

USER: Ok, my source code MN-MSP.

ASSISTANT: Can you please provide your travelling dates?

USER: My travelling dates are 01/05 and 01/07.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: There is no flight found with your requirements.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for availing us.