You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Joseph Williams, want to change my recent reservation. Please help me out with that.

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: We found your reservation and will you please provide me your new airport codes?

USER: I want to travel from DFW to JFK.

ASSISTANT: Ok, may I know your travelling dates?

USER: My travelling dates are from 07/22 to 07/24.

ASSISTANT: There is a flight available for you in Spirit airline with 2 connections. Shall I proceed for the booking?

USER: No, can you please check with 1 connection?

ASSISTANT: Sorry, there is no flight available with 1 connection.

USER: It's ok thank you.

ASSISTANT: Most welcome.