You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you today?

USER: I need to modify my reservation as my exams got postponed to some other day. Can you help me with that?

ASSISTANT: Sure, may I know your good name please?

USER: Thank you for considering my request, I have done my reservation with my name Eric Lewis.

ASSISTANT: Ok, please wait for few minutes.

USER: Sure, I will wait for your response.

ASSISTANT: There is no recent reservation found on your name in our records.

USER: Not an issue with that, it might not be booked properly at the time of booking. Anyways thank you for the information.

ASSISTANT: Thank you for choosing us.