You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I need to change my current reservation due to urgent meeting, can you help me with that?

ASSISTANT: Sure, I am here to help you. Please tell us your name.

USER: I am Christine Edwards.

ASSISTANT: Thank you. Please wait for a while, I will check your reservation status and let you know.

USER: Ok.

ASSISTANT: Sorry, no reservation found under your name in our database.

USER: That's ok. Thank you.

ASSISTANT: You are welcome and thank you for choosing us.