You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My exams are postponed due to heavy rains, can you help me to change dates in my existing reservation?

ASSISTANT: Sure, may I know your name?

USER: I had done reservation under the name Laura Davis.

ASSISTANT: Ok, please wait  a minute.

USER: Sure, I will wait for your response. Please take your own time.

ASSISTANT: We found a reservation on your name, can you please provide your travel dates?

USER: Sure, I am planning to travel on the dates 17 and 19 of the month Mar respectively.

ASSISTANT: May I know your airport codes?

USER: My airport codes are JFK and DTW.

ASSISTANT: Do you have any specifications?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: Sorry, there were no flights found on your route.

USER: So sad to hear that! I will go with other service. Anyway thank you for checking.

ASSISTANT: Thank you for opting us.