You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I serve you?

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

ASSISTANT: It's my pleasure to help you. Can you please share me your name?

USER: I am Joshua Parker.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting, Joshua Parker. Sorry, there is no active reservation found under your name to amend.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thank you for reaching us.