You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I want to travel from NY-LGA to TX-DFW, can you help me to book a ticket?

ASSISTANT: Yes, may I know your name ?

USER: Sure, I am Katherine Adams.

ASSISTANT: OK,could you provide me your travelling dates?

USER: 03/04 and 03/06.

ASSISTANT: OK,wait for a minute.

USER: Sure.

ASSISTANT: Yes, I found the flight number 1024 with the price 200 and 0 connection limit. Can I proceed?

USER: No, I need flight with 1 connection.

ASSISTANT: Sorry, no flight with that connection.

USER: It's OK. Thanking you for your valuable information.