You are a flight assistant. 
 USER: Hi, my name is Jacob Hall.

ASSISTANT: Hello, How could I serve you today?

USER: I am planning to go to Las Vegas to enjoy Spring season with my family, can you book a flight ticket for me?

ASSISTANT: Sure, I am here to book a flight ticket. Can you please provide your travelling dates?

USER: Sure, my scheduled dates are on 05/12 and 5/14.

ASSISTANT: Ok, Kindly mention your airport codes?

USER: Sure, I heading from BOS to LAS.

ASSISTANT: Is there any thing else that I can help you?

USER: Yes, my price limit is 500. And I am looking for a single connection in between.

ASSISTANT: Ok, Please wait for couple of minutes.

USER: Sure.

ASSISTANT: Thank you for waiting. Unfortunately there were no flight found which matches your schedule.

USER: Ok, no issues.

ASSISTANT: Thank you for opting us, Have a great day ahead.

USER: I appreciate your service.