You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want yo change my existing reservation, which is done recently. Can you please help me out?

ASSISTANT: Sure, we are here to help you. Please share your name.

USER: Thank you for considering my request. Myself Jessica Garcia.

ASSISTANT: Ok, please wait for a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you for choosing us.