You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Can you please help me to modify my existing reservation?

ASSISTANT: Sure, may I know the name to check for the status?

USER: Yes, I am Nancy Thompson.

ASSISTANT: Please be on hold, I will get back to you in a minute.

USER: Sure, I will wait for your reply.

ASSISTANT: Thank you for waiting.

USER: No problem.

ASSISTANT: Here, there is no active reservation have been found under your given name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.