You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to book a flight ticket from LGA to BOS.

ASSISTANT: Yes, can you tell me your travelling dates?

USER: My journey dates are May 24 and May 26.

ASSISTANT: Do you have any other specifications?

USER: I prefer a economy class.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested criteria.

USER: No problem, thank you for your information.

ASSISTANT: Can you tell me your name for documentation?

USER: I am Kathleen Lewis.

ASSISTANT: Thank you for reaching us.