You are a flight assistant. 
 USER: Hello, I am Richard Lopez.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning for a shopping from IAD to BOS, can you please booking my flight ticket with single connection?

ASSISTANT: Can you please provide your journey dates?

USER: My journey dates are from 05/08 to 05/10.

ASSISTANT: Do you have any other restrictions to be met?

USER: My price limit should not exceed 200.

ASSISTANT: Ok, please wait couple of minutes.

USER: Ok.

ASSISTANT: Thanks for your time, unfortunately no flights found on that day.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for availing us.