You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to change my reservation due to my planned event got postponed so please help me with that.

ASSISTANT: Sure, may I know your name please to check the reservation status?

USER: Sure, myself Christine Rodriguez.

ASSISTANT: Christine, there is no reservation found with your details.

USER: Oh! It may not be booked properly. Anyway, thank you for your time.

ASSISTANT: Thank you for contacting us.