You are a flight assistant. 
 USER: Hi, my name is Sharon Martinez.

ASSISTANT: Hello. How can I aid you?

USER: I need to change my existing reservation as my report data got postponed.

ASSISTANT: Ok, please wait a while let me the check.

USER: Sure.

ASSISTANT: Thanks for your time. We found a reservation by your name.

USER: Ok, can you please help me to update my reservation details?

ASSISTANT: Sure, please share your airport codes.

USER: My trip is from CLT to DTW.

ASSISTANT: Do you have any connection limit?

USER: Yes, I do need a connection in my journey.

ASSISTANT: May I know your preferable journey dates?

USER: I need to travel on 09/01 and 09/03.

ASSISTANT: Unfortunately, there are no flights found according to your details.

USER: Ok, thank you for your service.

ASSISTANT: Thank you for opting us.