You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Katherine Gonzalez.

ASSISTANT: Gonzalez, how can I assist you?

USER: Due to my financial issues, please help me in changing my existing reservation.

ASSISTANT: Sure, please wait for a minute.

USER: Sure, take your time.

ASSISTANT: Katherine, there is no reservation found with your details.

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

ASSISTANT: Thank you for contacting us.