You are a flight assistant. 
 USER: Hello, I am Laura Martinez.

ASSISTANT: Hello, how best may I serve you today?

USER: I am planning to go for a shopping from IAD to DTW, can you please book a flight ticket with single connection?

ASSISTANT: Sure, we are here to make your journey comfort. Kindly assign your preferred dates of travelling?

USER: My journey dates are 05/16 to 05/18.

ASSISTANT: Is there any restrictions in ticket fare?

USER: My price is 5000.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Sorry to say that there is no connecting flight found on your requested dates.

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

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