You are a flight assistant. 
 USER: Hello, I am Laura Garcia.

ASSISTANT: Hello. How can I help you?

USER: I need to book a ticket to meet my grandmother on her birthday 01/07.

ASSISTANT: Ok, can I know your nearest airport codes for travelling?

USER: Could you please help me in changing my recent reservation to 01/06?

ASSISTANT: Ok, I can help you with that.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: No problem, thank you for you information.

ASSISTANT: Thank you for reaching us.