You are a flight assistant. 
 USER: Hi, I am Edward Adams.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my existing reservation. Can you help me in this?

ASSISTANT: Sure, I can help you. Please wait a while.

USER: Thank you. Ok.

ASSISTANT: Thanks for your time.

USER: My pleasure.

ASSISTANT: We didn't found any reservation by this name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.