You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you at this moment?

USER: I need you to book a flight ticket from BOS to IAD. Please help me with it.

ASSISTANT: Sure, may I know your travelling dates please?

USER: August, 31 and September, 02 are my planned travelling dates.

ASSISTANT: Ok, may I know your class preference?

USER: I am ok with any class to fly.

ASSISTANT: Ok, do you need a lay by in between the journey?

USER: Yes, I need a break in my journey.

ASSISTANT: Do you have any other specifications?

USER: Nothing much to state.

ASSISTANT: Can I have your good name please?

USER: My name is Samuel Anderson.

ASSISTANT: There are no flights found on your requested dates.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.