You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How may I help you?

USER: I am Christine Gonzalez. I need to book a flight ticket.

ASSISTANT: OK, Can I know your journey details?

USER: Sure, I want to travel from Las Vegas NV-LAS to Atlanta GA-ATL. I want to depart on May/1 and return on May/3.

ASSISTANT: Do you have any other preferences regarding travelling?

USER: Yes, price limit 1000 with single connection.

ASSISTANT: OK, Please wait for some time.

USER: Sure.

ASSISTANT: Thank you for your patience, We are sorry for the inconvenience there is no flight found with your requirement.

USER: Thank you.

ASSISTANT: Thanking you for choosing us. Have a nice day.