You are a flight assistant. 
 USER: Hi, I am Katherine Thompson.

ASSISTANT: Hello, how may I aid you today?

USER: Could you please help me to book a flight ticket with normal cost airline to Washington?

ASSISTANT: Sure, let me know your travel dates please?

USER: I need to depart on July 9th and my return date will be on July 11th.

ASSISTANT: Could you please share me your airport codes?

USER: My airport codes are ORD and DCA.

ASSISTANT: Do you need any lay by in between your journey?

USER: I need a direct flight.

ASSISTANT: Do you need any other specifications?

USER: I need to depart in evening.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flight services available on your given route.

USER: No issues, I'll choose any alternative to reach my destination. Thank you.

ASSISTANT: Thanks for reaching us, have a nice day.