You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Debra Brown here.

ASSISTANT: How can I assist you Debra Brown?

USER: I will be modifying my recent reservation due to some health issues, can you help me please?

ASSISTANT: Sure, I will help you with this.

USER: Thank you. Ok, please check with my previous reservation and let me know my ticket status.

ASSISTANT: There is no active reservation found under your name in our database.

USER: Oh! That's very sad news. Anyways, thank you for checking.

ASSISTANT: Thank you for contacting us.

USER: Most welcome.