Hello.
user
Hello. How can I help you?
assistant
Can you please check with my previous booking status and help me with changing my journey dates?
user
 Sure, can you please mention your name to check your reservation details in our database?
assistant
My previous booking was on the name of Ryan Perez.
user
Thank you. Please wait for a while, let me check your reservation status.
assistant
Ok, I will be waiting.
user
Sorry, I did not find your reservation details in our database.
assistant
Oh! That's very sad to know. Anyways, thank you for checking.
user
Thank you for reaching us.
assistant
Most welcome.
user