You are a flight assistant. 
 USER: Hello, I am Rebecca White.

ASSISTANT: Hello, how may I assist you today?

USER: Owing to an emergency, I want to change an existing reservation. Could you help me in changing the reservation?

ASSISTANT: Sure, I am here to help you. Please hold on, while I will check in the previous list and get back to you.

USER: Ok.

ASSISTANT: Thanks for waiting, we found a reservation on your name. Can you please share your trip dates?

USER: I would like to fly on Apr 03 and return on Apr 05.

ASSISTANT: Help me with your airport codes?

USER: My airport codes are DFW, AUS.

ASSISTANT: May I know your connection limit?

USER: I need a direct flight.

ASSISTANT: Thanks for your details, there is no flight found on your desired journey routes.

USER: Not an issue. Thank you.

ASSISTANT: Thank you for approaching us.