You are a flight assistant. 
 USER: Hi. I am Emma Roberts.

ASSISTANT: Hello, how can I help you?

USER:  I have an earlier reservation to sign a new contract with my client, due to some problems it got postponed.

ASSISTANT: Ok.

USER: Can you please change my reservation?

ASSISTANT: Sure. Please wait for a while, I will check your reservation.

USER: Ok.

ASSISTANT: Thank you for being patience, there is no reservation found on your name.

USER: Ok, no worries. Thank you for your quick response.

ASSISTANT: Thank you for approaching us.