You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: I am here to help you with your concern. Sure, can you please let me know your name to check with the reservation status?

USER: Myself Jessica Smith.

ASSISTANT: Thank you for sharing your name. Please bear with me for 2-3 minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, Jessica Smith. Sorry, we are unable to find any reservation found under your name to change.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us. Have a great day!.