You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I have booked a business class flight ticket earlier in a hurry moment. Now I want to change it for an economy class ticket. Can you help me in this?

ASSISTANT: Sure, May I have your name please to change your reservation?

USER: Ok, my name is Mary Harris.

ASSISTANT: Ok, please wait for a minute.

USER: OK.

ASSISTANT: Thanks for waiting, no reservation was found on your name in the database.

USER: Ok, no issues in that. Thanks for the information.

ASSISTANT: Thank you for reaching us.