You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Edward Thomas here.

ASSISTANT: Edward, how may I render you?

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

ASSISTANT: Sure, I'm glad to help you with that. Please wait for a while.

USER: Sure, take your own time.

ASSISTANT: Sorry, no reservation is available by your name.

USER: Oh! May be something went wrong while I was booking the ticket. Thank you anyways.

ASSISTANT: Thank you for contacting us.