You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Benjamin Mitchell. I want to change my existing reservation due to health issues.

ASSISTANT: Ok then please wait a while, I will check and revert you.

USER: Ok.

ASSISTANT: We are happy to inform you that we found your reservation. Please forward all your updated details.

USER: I will start on 08/31, return on 09/02. My source and destinations are NV-LAS, CO-DEN. And my price limit is 5000.

ASSISTANT: Ok, wait a moment. I will check the availability.

USER: Ok.

ASSISTANT: We found a double connecting flight in JetBlue airlines with fare of 100.

USER: I want one connection limit.

ASSISTANT: Shall I proceed to book?

USER: Don't proceed to booking. Thanks for your service.

ASSISTANT: Ok, no issues. Thanks for availing our service.