You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to spend my weekend at Las Vegas, please help me in booking a ticket from JFK to LAS.

ASSISTANT: Sure, May I know your good name please?

USER: My name is Deborah Rodriguez.

ASSISTANT: May I know on which dates you are willing to travel?

USER: I would like to plan my journey on Dec 8 and return on Dec 10.

ASSISTANT: May I know your class preference please?

USER: I ma comfortable with any class.

ASSISTANT: Do you have any other specifications please?

USER: I would like to return in the evening.

ASSISTANT: Sorry Rodriguez, there is no flight found as per your travelling dates.

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

ASSISTANT: Thank you for reaching us.