You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Rebecca Perez here. Can you change my flight ticket reservation? As my wedding date has been postponed to some other dates which was to be held in a church in Denver.

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation with your name.

USER: Ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.