You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I am Christopher Edwards. I want to book a flight ticket.

ASSISTANT: Sure and thank you for giving your name. To proceed for booking, Let me know your journey details?

USER: Sure, I want to travel from Charlotte, NC - CLT, to Las Vegas, NV- LAS. Also my preferred dates are June 26th as depart day and June 28th as return day.

ASSISTANT: Thank you for the details provided, please wait a moment so that I will check the availability of flights.

USER: OK, I have a price limit as 200 and connection limit as 1.

ASSISTANT: Thank you for waiting, I am sorry to inform you that there were no flights available with your preferences.

USER: Thank you for your information.

ASSISTANT: Thank you for contacting us, Have a happy day.