You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: As an emergency meeting in office, I am unable to travel to the trip which I have planned, so I would like to change my previous booking, can you help in that one?

ASSISTANT: Sure, I will help you with it. Can you please let me know the name on which your previous booking is done?

USER: Sure, the previous booking is done on my name Jason Anderson.

ASSISTANT: Sorry, there is no reservation under the name which you have mentioned in our database.

USER: Ok, that's fine, no issues with that one.

ASSISTANT: My pleasure, thank you for opting our service. Hope you have a safe journey.

USER: Thank you for your search and immediate response.