You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket to Washington, DCA  with the name Deborah Clark>. Can you help me in booking from LAS?

ASSISTANT: Sure, kindly mention your travel dates?

USER: My travelling dates are from 07/12 to 07/14.

ASSISTANT: Ok, please wait a moment. Sorry to say, no flight found with your requirement.

USER: Ok, thanks for the information.

ASSISTANT: May I know your name?

USER: I am Deborah Clark.

ASSISTANT: Thanks for reaching us.

USER: Thank you.