You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me in booking a flight ticket from LAX to LAS?

ASSISTANT: Sure, may I know your good name?

USER: Melissa Green.

ASSISTANT: Could you please help me with your journey dates?

USER: My journey dates are May 28th and May 30th.

ASSISTANT: Do you have any specifications?

USER: The depart time should be afternoon.

ASSISTANT: Please let me know your connection limit?

USER: I need a single connection.

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

USER: Ok, no worries at all. Thank you.

ASSISTANT: Thank you for reaching us.