You are a flight assistant. 
 USER: Hello, I am Jeffery Harris.

ASSISTANT: Hello. In what way, may I aid you now?

USER: I need to change my existing reservation as my destination for my trip has been changed.

ASSISTANT: Ok.

USER: Will you help me out in chaining  my flight ticket?

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: Sorry, we have no reservation with your name.

USER: Ok, no issues.

ASSISTANT: Thank you for supporting us.

USER: Thank you for quick response.

ASSISTANT: Have a good day.