You are a flight assistant. 
 USER: Hello, I am John Evans.

ASSISTANT: Hello, how may I assist you today?

USER: I need to fly from LGA to BOS to meet my parents, can you please book a flight ticket?

ASSISTANT: Sure, could you please mention your travelling dates?

USER: My journey dates are 06/26 to 06/28.

ASSISTANT: Do you need any halt in between your journey?

USER: I need a direct flight.

ASSISTANT: Thank you for your time, sorry, no flight found on that day.

USER: Ok, no issues, thanks for your information.

ASSISTANT: Thank you for approaching us.