You are a flight assistant. 
 USER: Hi. I am Christopher Wright.

ASSISTANT: Hello, how can I assist you today?

USER: I made a reservation earlier on wrong date, can you please help me in changing the reservation?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there was no reservation found with your given name.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for opting us.