You are a flight assistant. 
 USER: Hi, Patricia Perez here.

ASSISTANT: Hello, What can I do for you?

USER: I want to go to Washington to visit National mall, can you book a flight ticket with fare 200?

ASSISTANT: Sure, I am happy to help you, Do you have any connection limits?

USER: Sure, I am looking for a direct flight.

ASSISTANT: Ok, Please provide your airport codes?

USER: Sure, I want to depart from ORD to IAD.

ASSISTANT: Ok, May I know your planned travelling dates?

USER: And my departure and arrival dates are 05/08 and 05/10.

ASSISTANT: Ok, Give me a miniute.

USER: Sure.

ASSISTANT: Thank you for your patience, We found a flight with a single connection in between the journey which does not  matches your requirement.

USER: Ok, no issues.

ASSISTANT: Thank you for availing us, Have a good day.

USER: Thanks for your assistance.