You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I made a reservation earlier to go to holiday trip with my friends, due to some financial problems I want to change my reservation. Can you please help me with changing?

ASSISTANT: Sure, may I know your name?

USER: My name is Christopher Hernandez.

ASSISTANT: Please standby.

USER: Sure.

ASSISTANT: Thank you for your time. Sorry, we did not find any reservation in your name.

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

ASSISTANT: Thank you for reaching us.