You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Robert Edwards.

ASSISTANT: How can I help you today?

USER: I want to change my existing reservation due to postponed of my project submission dates.

ASSISTANT: Ok.

USER: Can you please help me with that?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there is a reservation found on your name. Please share your journey details.

USER: My airport codes are ORD - AUS.

ASSISTANT: Let me know your journey dates.

USER: My journey dates are 10/17 to 10/19.

ASSISTANT: Do you have any connection limit?

USER: I need a halt in between my journey.

ASSISTANT: Thank you for sharing your details.

USER: OK.

ASSISTANT: There were no flights found on your given requirements.

USER: OK, no problem.

ASSISTANT: Ok.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.