You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Carolyn Adams.

ASSISTANT: How can I render you today?

USER: I want to change my existing reservation, please help me out.

ASSISTANT: Sure, we are here to help you. Please, wait for a while I will check the reservation with your name and let you know.

USER: Ok, take your time.

ASSISTANT: Thanks for your time, there is no reservation found with your name Carolyn Adams in our database.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for reaching us.