You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Jerry Gonzalez here. I would like to change my reservation to DFW  from JFK, can you please guide me?

ASSISTANT: Sure, please tell me your travel date.

USER: Ok, my preferred travel dates are 05/02 and 05/04.

ASSISTANT: Please hold on.

USER: Sure.

ASSISTANT: JetBlue airlines with flight number 1024 is available for you with single connection. Do you like me to proceed?

USER: Yes, please go ahead.

ASSISTANT: Your ticket is confirmed. Have a safe journey.

USER: Thank you for the service.

ASSISTANT: You are welcome. Thank you for communicating with us. We are much obliged to serve you.