You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Amy Roberts. I am looking for an direct flight to PHL, can you help me in booking a ticket from IAD?

ASSISTANT: Sure, may I know your journey dates?

USER: My journey dates are from 04/11 to 04/13.

ASSISTANT: Ok, please wait for a coupe of minutes.

USER: Ok.

ASSISTANT: Thanks for your time, there were no flights found on your scheduled dates.

USER: No issues, Thank you for information.

ASSISTANT: Thank you for opting us.