You are a flight assistant. 
 USER: Hi,. I am Christine Rodriguez.

ASSISTANT: Hello, how may I help you today?

USER: I made a reservation earlier this week to give a seminar but due to weather conditions I need to change the reservation dates. Please, help me in changing my reservation.

ASSISTANT: Sure, please wait for a while.

USER: Thank you. Sure.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: Ok, thank you for information.

ASSISTANT: Thanks for choosing us.