You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Laura Clark. Can you please reserve me a flight ticket from ORD to BOS?

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: My travelling dates are June 20 and June 322.

ASSISTANT: Do you have any preferences?

USER: Make sure that return flight is in the afternoon.

ASSISTANT: Sorry, there is no flight available for you.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for helping me.