You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: May I know your name?

USER: Sure, my name is Kathleen Allen.

ASSISTANT: Your reservation found, can you please share your airport codes?

USER: My source airport code is DTW and the destination airport code is BOS.

ASSISTANT: Please share your trip dates?

USER: I would like to take off on July 26 and return on July 28.

ASSISTANT: Can you please share your specifications?

USER: I would like to depart during evening time.

ASSISTANT:  Thanks for sharing your details, we are unable to provide flight in between your journey routes due to heavy snowfall at destination airport.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you.

USER: You are welcome.