You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: May I know your name please to check the status of your reservation?

USER: Thank you. Please check the reservation with my name Edward Hernandez.

ASSISTANT: Thank you. Please stay online for a while, I will check your reservation status and let you know.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no reservation matching with your name in our portal to make changes further.

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

ASSISTANT: Thank you for reaching us.

USER: Most welcome.