You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from PHL to attend a business conference at HOU, can you help me booking a flight ticket?

ASSISTANT: Sure, may I know the travelling dates?

USER: Apr, 2 and Apr, 4 are my trip dates.

ASSISTANT: Do you have any connection limit?

USER: I would prefer single connection.

ASSISTANT: Are there any other specifications?

USER: No, thank you.

ASSISTANT: May I know your name?

USER: Samantha Wright here.

ASSISTANT:  Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for opting us.