You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. How can I serve you?

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

ASSISTANT: Sure. May I know your good name?

USER: Sure, Gary King is my name.

ASSISTANT: Wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, There is no reservation found with your name.

USER: Not an issue. Thank you.

ASSISTANT: thank you.