You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Can you share your trip dates?

USER: My travelling dates are Jan 19 to Jan 21.

ASSISTANT: Do you need any connections?

USER: I need a single connection of flight.

ASSISTANT: Are there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: I am Nicole Hill.

ASSISTANT: Sorry, there is no flight found with your details.

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.