You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Emma Allen, due to some personal work I would like to change my recent reservation, can you help me to change that reservation with new airport codes?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Emma Allen, we haven't found your reservation under your name in our database.

USER: That's fine, thanks for your information and help.

ASSISTANT: Thank you for reaching us.