You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I support you?

USER: Owing to an emergency I had to request for this  changing reservation with the name of Donald Lee. Can you help me in this changing reservation?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: Please wait for a while. I will check the reservation status and let you know.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Fine.

ASSISTANT: There was no reservation found in airline data on your name.

USER: No problem. Thank you.

ASSISTANT: Thank you for contacting us.