You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Rebecca Scott.

ASSISTANT: How can I support you?

USER: Can you please help me in changing my existing reservation to Houston? As my meeting got postponed at Houston.

ASSISTANT: Sure, we are mirthful to help you.

USER: Thank you.

ASSISTANT: Please be on hold. I will check and revert you.

USER: Sure, I will wait for your information.

ASSISTANT: Thanks for waiting, we did not find any active reservation on your name in our records.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: Thank you for contacting us.