You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I provide assistance to you?

USER: Can you help me in booking my flight ticket from JFK to LAS?

ASSISTANT: Sure, I am ravish to help you. May I know on which dates you are planning to start and return?

USER: My planned dates of journey are Dec 01 and Dec 03.

ASSISTANT: Do you need any flag stop in between journey?

USER: I need a connecting flight for this trip.

ASSISTANT: May I know your good name please?

USER: My name is David Smith.

ASSISTANT: Is there any other specifications regarding your journey?

USER: No, thanks for asking.

ASSISTANT: Ok, please wait a moment. let me search a flight for you.

USER: Sure, I will wait for your information.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thanks for contacting us, wish you a great day.