You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have a business meet in Los Angels, can you help me for ticket booking from OAK to LAS?

ASSISTANT: Please provide your trip dates also.

USER: My travelling dates are 08/07 and 08/09.

ASSISTANT: May I know your name?

USER: My name is Anthony Parker.

ASSISTANT: Sorry, there is no flight found with your requirements. Do you have any other dates to travel?

USER: No, thank you.

ASSISTANT: Thank you for choosing us.