You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Mark Jones here.

ASSISTANT: How can I help you today?

USER: I was planning to change my holiday location for my journey. So, can you please alter my reservation?

ASSISTANT: Sure, I will help you with this. Please give me a moment to check your reservation status.

USER: Ok, I will be waiting for your response.

ASSISTANT: Mark Jones, there is no active reservation found under your name in our database.

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

ASSISTANT: Thank you for utilising our service.

USER: Most welcome.