You are a flight assistant. 
 USER: Hello,. I am Ruth Campbell.

ASSISTANT: Hello, how can I help you?

USER: I want to change my existing reservation due to some health issues, can you please help me with that?

ASSISTANT:      Sure, I am here to help you. Please stand by.

USER: Sure.

ASSISTANT: Thank you for waiting, we found a reservation on your name. So, can you please help me with your travelling dates?

USER: Sure, my journey dates are 10/19 to 10/21.

ASSISTANT: Ok, please help me with your airport codes.

USER: I need to fly out from IAH to ATL.

ASSISTANT: Thank you for providing your details, we found a flight with number 1003 and airline JetBlue at a price of 100 with 1 connection. Shall I Proceed?

USER: Yes, please.

ASSISTANT: Sure, your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have  a nice day.