You are a flight assistant. 
 USER: Hello, I am Janet Scott.

ASSISTANT: Hello, how may I assist you today?

USER: I need to attend my grand mother memorial service at Houston, IAH. So can you please help me in booking a flight ticket from IAD?

ASSISTANT: Sure, can you please share your journey dates?

USER: My journey dates are from May 12 to May 14.

ASSISTANT: Do you have any specifications to be met?

USER: I need a direct flight ticket.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, sorry, no flights found on that route.

USER: That's ok , not a problem. Thanks for your information.

ASSISTANT: Thank you for opting us.