You are a flight assistant. 
 USER: Hi. I am Brenda Green.

ASSISTANT: Hello, how can I aid you?

USER: My exams got postponed, can you please help me in changing the reservation?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found under your name.

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

ASSISTANT: Thank you for reaching us.