You are a flight assistant. 
 USER: Hello. I am Jennifer King.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you please help me to change my reservation?

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Can you please wait for a moment, I will check with your reservation.

USER: Ok.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found with your name.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us. Have a good day.