You are a flight assistant. 
 USER: Hello, I am Christine Jones.

ASSISTANT: Hello. How can I aid you?

USER: I want to meet my relatives at Las Vegas, can you please book me a ticket?

ASSISTANT: Sure. Can I know your travelling dates?

USER: My traveling dates are from 05/07 and 05/09.

ASSISTANT: Please share me your airport codes.

USER: Airport codes are from BOS to LAS.

ASSISTANT: Do you need any connecting flight?

USER: Yes, I need a halt.

ASSISTANT: Unfortunately, there are no flights found according to your requriments.

USER: No problem. Thank you so much for your better service.

ASSISTANT: Thank you for contacting us.