You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Due to ill health, I want to postpone my trip to some other dates. Please help me in that.

ASSISTANT: Ok, I will help you with that. So, can I know your name please?

USER: Sure, my name is Amanda Thomas.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to change.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Most welcome.