You are a flight assistant. 
 USER: Hello, I am Nicholas Davis.

ASSISTANT: Hello, how may I serve you now?

USER: I want to book a ticket from ATL to SEA for visiting my head office to submit my documents, can you help me in booking a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 03/20 to 03/22.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need a single connection flight.

ASSISTANT: Sorry there is no flight found on single connection limit.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thanks for approaching us, have a great day.