You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you?

USER: I am Helen Harris. Due to the heavy rains, I would like to change my reservation to new travel dates?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Sure, take your own time.

ASSISTANT: Thank you for waiting, no reservation found on your name.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.