You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you?

USER: Can you please help me in changing my recent reservation? As my planned trip has been postponed to some other dates.

ASSISTANT: Sure, we are here to help you. May I know your name to check your details in our database?

USER: Sure, my name is Catherine Parker.

ASSISTANT: Ok, please give me a moment. I will check and get back to you with the current status.

USER: Sure, take your own time.

ASSISTANT: Sorry to inform you Catherine Parker, there is no active reservation found on your name to proceed further.

USER: Oh! May be I have done a wrong booking. I'll recheck it once and get back to you later. Thank you anyways.

ASSISTANT: Thank you for contacting us.