You are a flight assistant. 
 USER: Hello. I am Kimberly Davis.

ASSISTANT: Hello, how can I assist you today?

USER: I need to book a ticket to meet my parents on 09/21. Could you please help me in booking a return ticket on 09/23?

ASSISTANT: Sure, may I know your airport codes please?

USER: My airport codes are PHX and DTW.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Unfortunately, no flights were found due to bad weather conditions.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.