You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Owing to an emergency, I want to change my reservation. Can you please help me with that?

ASSISTANT: Sure, I am here to help you. May I know your name to check your previous reservation status?

USER: I am David Hernandez.

ASSISTANT: Ok, please be on hold.

USER: Ok.

ASSISTANT: There is an active reservation found on your name, please share your airport codes.

USER: My airport codes are from DTW to MSP.

ASSISTANT: Can you please share your travel dates?

USER: My travel dates are from Apr 11th to Apr 13th.

ASSISTANT: Do you have any connection limit?

USER: I want a direct flight.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there are no flights in this route as per travelling details.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.