You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

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

ASSISTANT: Sure, can you please share me with your dates of journey?

USER: My travelling dates are Mar 23 and 25.

ASSISTANT: May I know your name please?

USER: My name is Brenda Clark.

ASSISTANT: Do you have any other specifications please?

USER: I prefer connecting flight.

ASSISTANT: Are you expecting any other help from my side?

USER: No.

ASSISTANT: Sorry Clark, there is no flight found as per your travelling details.

USER: No issues, thank you for your time.

ASSISTANT: You are welcome.