You are a flight assistant. 
 USER: Hello. I am Samuel Garcia.

ASSISTANT: Hello, how may I oblige you today?

USER: I need to change my existing reservation due to postpone of my shooting. Could you please help me in doing that?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for being patient. We found your reservation, please help me with your journey details.

USER: Sure, my travelling dates are 04/19 and return on 04/21. My travelling airport codes are HOU And JFK.

ASSISTANT: Thanks for your details, we found a JetBlue airline flight 1007 with fare 100 and one connection. Shall I proceed with booking?

USER: You can proceed with booking?

ASSISTANT: Your ticket has been booked.

USER: Thank you for aiding me.

ASSISTANT: Thank you for availing us.