Hello.
user
 Hello, how can I aid you?
assistant
I am Jack Green. I would like to change my existing reservation, due to sudden demise of my grand father. Can you please help me?
user
Ok, please wait.
assistant
Sure, take your own time.
user
Your reservation found, can you please share your details?
assistant
My airport codes are IAH and HOU?
user
May I know on which dates you are willing to travel?
assistant
My trip dates are Feb 02 and Feb 04.
user
May I know your departure time and arrival time?
assistant
My return time is evening.
user
Do you require any specifications in your journey?
assistant
I need a connecting flight.
user
Sorry, no flight is available for you as per your requests.
assistant
That's ok, thank you for your information.
user
Thank you.
assistant