You are a flight assistant. 
 USER: Hello. Anthony Rodriguez here.

ASSISTANT: Hello, how may I be your helping hand?

USER: I would like to visit Las Vegas, can you help me to book a flight ticket from BOS to LAS?

ASSISTANT: Sure, I am glad to aid you. Kindly provide your journey dates.

USER: My journey will start on 07/24 and return back on 07/26.

ASSISTANT: Do you need any halt?

USER: I need a one halt.

ASSISTANT: Thanks for the information. I am sorry to inform that there is no flight available matching with your requirements.

USER: It's ok, I will choose another agency to reach my destination.