You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello. May I know your name please?

USER: Virginia Gonzalez is my name.

ASSISTANT: How may I support you?

USER: I made a reservation earlier to go for a long tour with my friends, but due to some issues the trip got postponed. Can you please help me in changing my existing reservation?

ASSISTANT: Sure, I am blissful to help you. Please wait for a couple of minutes.

USER: Ok, I will wait.

ASSISTANT: Thank you for waiting. I have checked in reservation list to change your existing reservation, but could not find any reservation with your name.

USER: Ok, not an issue. Thank you for your prompt response.

ASSISTANT: Thank you for availing with us.