You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I oblige you today?

USER: I am planning to attend my friend marriage at Charlotte, could you help me with booking?

ASSISTANT: Sure, we are here to aid you. When did you schedule your trip?

USER: I will start on 06/16 and arrival on 06/18.

ASSISTANT: May I know your airport codes?

USER: My source is PA-PHL and destination is Charlotte NC-CLT.

ASSISTANT: May I know your good name?

USER: Catherine Robinson here.

ASSISTANT: Thanks for your details. Sorry to inform you, currently no flights are running to that locations due to abnormal weather conditions.

USER: Ok, no worries. Thank you.

ASSISTANT: Thank you.