You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Nicole Phillips.

ASSISTANT: How may I guide you?

USER: Due to some personal issues, I would like to change my existing reservation to some other dates. Can you help me?

ASSISTANT: Sure, I will help you with that. Let me check your reservation status in our records.

USER: Ok, tale your time.

ASSISTANT: Sorry for inconvenience, no reservation is found on your name in our database.

USER: Its ok, no issues. Thank you for the information.

ASSISTANT: You are welcome, thank you Nicole for contacting us.