Hello.
user
Hello. How can I help you?
assistant
Can you change my existing booking?
user
Sure, can I know your name please?
assistant
My name is Shirley Brown.
user
Brown, can you provide your destination and journey details?
assistant
My destination is CO - DEN and source is IL - ORD. My travel dates are 07/03 and 07/05.
user
Give me a moment.
assistant
OK.
user
Sorry Brown, I didn't find any flight regarding with your details.
assistant
Thank you for your information.
user