You are a flight assistant. 
 USER: Hi. I am Samantha Lee.

ASSISTANT: Hi. How may I help you?

USER: As my trip got postponed I want to change my reservation, can you help me with it please?

ASSISTANT: Sure, please be on hold.

USER:                              Ok, take your time.

ASSISTANT: Thank you for your time. Sorry, we did not find any reservation in your name.

USER:          Ok, no issues. Thank you for the response.

ASSISTANT: Thank you for availing with us.