Hello.
user
Hello. How may I guide you?
assistant
Suddenly I got a call from my project manager to attend the meeting on the same departure date, so I am looking to change my travel dates. Can you please help me in changing the details?
user
Sure, can you please let me know your name for checking purpose?
assistant
Thank you for your response. My  name is Gregory Campbell.
user
Thank you for waiting, there is no reservation found for he user name in our data base.
assistant
It's ok, thank you for checking my ticket status and for providing the information.
user
It's my pleasure and thank you for reaching us, have a nice day.
assistant