You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you today?

USER: Please change my reservation with the name of Richard Collins, as my trip for a Business trip has been postponed.

ASSISTANT: Sure. Please stay online, I will check the reservation list whether your name is there or not.

USER: Ok.

ASSISTANT: Thanks for your time.

USER: Fine.

ASSISTANT: I did not find your name in the reservation list, to proceed further.

USER: Not a issue.

ASSISTANT: Ok.

USER: Thank you for your your support.

ASSISTANT: Thanks for reaching us, Have a nice day.