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

ASSISTANT: Hello, how may I assist you?

USER: Can you book a flight ticket from SEA to ORD?

ASSISTANT: Sure, may I know your travel dates?

USER: 09/25 and 09/27 are my travelling dates.

ASSISTANT: Do you need a halt?

USER: Yes, I need a halt.

ASSISTANT: There is no flight on your details.

USER: Ok, no issues.

ASSISTANT: Thank you so much for choosing us.

USER: Thanks for your service.