You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Nicole Collins. I want to change my existing reservation, can you help me?

ASSISTANT: Ok, please I will check as per your concern, please wait a moment.

USER: Thank you. I will wait for your response.

ASSISTANT: There is no reservation been found as per the reservation records, sorry for the inconveniences.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for connecting with our agency.