You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Melissa Taylor.

ASSISTANT: What can I do for you Taylor?

USER: For some issues I want to change my recent reservation, can you please help me with it?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Thanks.

ASSISTANT: Sorry, no reservation found with your name to change the reservation.

USER: It's ok.

ASSISTANT: Thank you for reaching us.

USER: Thank you for the information.