You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Scott Nelson here.

ASSISTANT: How can I assist you?

USER: Can you please help me in changing my recent reservation? As I have to attend a client meeting on my planned trip dates.

ASSISTANT: Ok, please give me a minute.

USER: Sure, take your own time.

ASSISTANT: Scott, there is no reservation found with your details.

USER: Oh! That's ok, may be I have done a wrong booking. Thank you anyways.

ASSISTANT: Thank you for contacting us.