You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket in the evening to meet my cousin at Las Vegas, can you help me with booking?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates are Nov 14 and Nov 16.

ASSISTANT: May I know your airport codes?

USER: My airport codes are LGA to LAS.

ASSISTANT: Do you want connecting flight?

USER: I need a lay by in between my journey.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: I am Samuel Taylor.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for opting us.