You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me in booking a flight ticket from LAS to IAD?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: Sure, my travel dates are from Dec 26 to Dec 28.

ASSISTANT: Ok. Do you need any break in between your journey?

USER: Yes, I need a break in between my journey.

ASSISTANT: Are you looking for any time concern at the time of take off and for your return journey?

USER: I would like to return in the morning.

ASSISTANT:  Is there any other criteria?

USER: No.

ASSISTANT: If you can help me with your name, I can check with the availability of flights.

USER: Myself Anthony Jackson.

ASSISTANT: Thank you for the information, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights available for the mentioned dates.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.