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

ASSISTANT: Hello, what can I do for you today?

USER: I want to book a flight ticket from WA-SEA to DC-IAD. Can you help me with this booking?

ASSISTANT: Sure, we are here to help you. May I know your depart and arrival dates?

USER: 07/23 and 07/25 are my travelling dates.

ASSISTANT: Do you need a halt in between the journey?

USER: I need a connecting flight.

ASSISTANT: At what price limit are you looking me to book a ticket for you?

USER: 200 is my fare.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Unfortunately, there were no flights found on your route.

USER: No issue. Thank you.

ASSISTANT: Thank you for reaching us.