You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to book a ticket from LAS to ATL, can you help me?

ASSISTANT: Sure, please provide your dates too.

USER: My travel dates are 02/18 and 02/20.

ASSISTANT: Mean while let me know your name.

USER: I want to book a ticket in the name of Ryan Miller.

ASSISTANT: Ryan Miller, there is no flights for you.

USER: Ok. Thank you for checking.

ASSISTANT: Thank you for reaching us.