You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: My name is Frank Parker, I just need your help in booking a plane ticket from BOS to MSP.

ASSISTANT: I will help you with that. Can you please share your preferable journey dates?

USER: Sure, my planned travelling dates are from 04/10 to 04/12.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: I am sorry to say that there is no flight found under your details.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.