You are a flight assistant. 
 USER: Hi. I am Samuel Lee.

ASSISTANT: Hello, how may I assist you?

USER: I want to give surprise to my parents on their wedding anniversary at Philadelphia, can you be my helping hand in reservation?

ASSISTANT: Sure, we are here to make your booking in a easy way. May I know your journey dates?

USER: My preferable dates of travel is from 03/24 to 03/26.

ASSISTANT: Can you share your airport codes?

USER: My airport codes are from MI-DTW to PA-PHL.

ASSISTANT: Wait for couple of seconds.

USER: Ok.

ASSISTANT: We found a direct flight to PHL.

USER: Ok, do not proceed with booking.

ASSISTANT: Ok. Thank you for reaching us, have a nice day.

USER: Thank you.