You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am planning to visit Washington city, can you please book me a ticket from PHL to DCA?

ASSISTANT: Sure, I will help you out. May I know your name please?

USER: My name is Betty Lewis.

ASSISTANT: May I know your travelling dates please?

USER: My preferable journey dates are from 06/30 to 07/02.

ASSISTANT: Ok, please wait a moment.

USER: Sure, take your own time.

ASSISTANT: Thank you for your patience. Sorry, there are no flights found on this name.

USER: Ok, not an issue. I will find any alternate for this trip.

ASSISTANT: Thank you for choosing our services.

USER: Thank you for providing information.