You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Dorothy Lewis here.

ASSISTANT: How can I be in your service?

USER: I will be changing my reservation to another location for my holiday, can you please help me with changing?

ASSISTANT: Ok, I will help you with that. Thank you waiting for my response, I have not found the reservation on your name in our records.

USER: Oh! That's fine, thank you for checking anyways.

ASSISTANT: Thank you for approaching us.

USER: You are most welcome.