You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Could you please help me to book a flight ticket from DCA to PHX?

ASSISTANT: Sure, may I know the travelling dates?

USER: My travelling dates are Jan 03 and Jan 05.

ASSISTANT: Do you have any connection limit?

USER: I need a single connecting flight.

ASSISTANT:  Are there any other specifications?

USER: I want to depart in the morning.

ASSISTANT: May I know your name?

USER: I am Emma Thomas.

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.