You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to visit white house which is located in Washington, IAD. Can you avail me to book a connecting flight?

ASSISTANT: Sure, may I know your airport codes?

USER: My source is from New York, EWR.

ASSISTANT: Can you please tell me your travelling dates?

USER: My trip dates are Dec 24 and 26.

ASSISTANT: Do you have any other specifications?

USER: I want to depart in the morning time.

ASSISTANT: May I know your name?

USER: Catherine Edwards here.

ASSISTANT: There are no flights found with your required dates to travel.

USER: Ok, thank you.

ASSISTANT: Thank you for opting us.