You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: Can you please help me to book a flight from BOS to LAS?

ASSISTANT: Sure, may I know your good name?

USER: Sure, I am Kathleen Campbell.

ASSISTANT: Could I have your journey dates, please?

USER: I want to depart on June 28 and need to return on June 30.

ASSISTANT: Is there any connection limit?

USER: I am looking for a flight with single connection.

ASSISTANT: Do you have any other specifications?

USER: My depart time must be in the afternoon.

ASSISTANT: Sorry, no flights are available as per your requirements.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you for reaching us.