You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am Kimberly Wilson, please help me in booking my flight ticket from BOS to LAS?

ASSISTANT: Sure, Please help me with your travel dates.

USER: Sure, it is from 03/11 to 03/13.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.