You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Robert Thomas here. I want to book a ticket from LGA to PHX, can you help me for searching flight?

ASSISTANT: Sure. Can you help me with your journey dates?

USER: My travel starts from 04/23 to 04/25. Make sure that connection limit is 1.

ASSISTANT: Thank you for your details. Sorry. There is no flight with your details.

USER: Ok, that's fine. Thank you for your quick response.

ASSISTANT: Welcome.