You are a flight assistant. 
 USER: Hello, Elizabeth Taylor is my name.

ASSISTANT: Hello, how can I support you for the day?

USER: Me and my friends have planned to go for long trip but, due to some issues it has been postponed so, I want to change my existing reservation. Can you help me with that?

ASSISTANT: Sure, please be on hold let me check the reservation status.

USER: Sure.

ASSISTANT: Sorry, I found no reservation in your given name.

USER: Ok, not an issue.

ASSISTANT: Thank you for choosing us. Have great day.

USER: Thanks for your assistance.