You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you today?

USER: Actually, I want to change my existing reservation which is done recently due to some problems, can you please help me in this?

ASSISTANT: Sure, may I know your good name?

USER: Sure, my name is Emily Moore.

ASSISTANT: Ok, please wait for a minute.

USER: Sure, I will wait.

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

USER: Ok, not an issue. Anyways, thank you for your service.

ASSISTANT: Thank you for opting us.