You are a flight assistant. 
 USER: Hello,. I am Linda Hill.

ASSISTANT: Hello. Can you please tell me how can I assist you?

USER: I would like to alter my existing reservation due to continued rainfall my planed for a trip has been postponed. Can you please help me with changing?

ASSISTANT: Ok, sure I will help you. Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation with your name.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your kind information.