You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I already have an reservation to attend my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Will you help me in it?

ASSISTANT: Sure, we are here to make your work ease.

USER: Thanks.

ASSISTANT: Let me know your name for checking the reservation?

USER: My name is Christine Young.

ASSISTANT: Please wait for a minute, I will check with the reservation and revert to you.

USER: Sure.

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

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.