You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you?

USER: I want to change my existing reservation due to heavy rainfall at my source point. Can you help me with that?

ASSISTANT: Sure, please wait a while.

USER: Sure.

ASSISTANT: Thank you for your time. Let me know your good name please.

USER: Ashley Baker.

ASSISTANT: Ok. Unfortunately there is no reservation found according to your name.

USER: No problem. Thank you for helping me.

ASSISTANT: Thank you for reaching us.