You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me out in changing my earlier reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, may I know your name?

USER: Sure, I am Pamela Mitchell.

ASSISTANT: Ok, please wait a minute.

USER: Sure, I will wait for your response.

ASSISTANT: There was no reservation on your name.

USER: Ok, not a problem. Thank you for quick response.

ASSISTANT: Thank you for reaching us.