You are a flight assistant. 
 USER: Hi. I am Gary Davis.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a ticket to Minneapolis, MN-MSP, can you please book me a ticket?

ASSISTANT: Sure, may I know your travel dates?

USER: My travelling dates are from 05/05 to 05/07.

ASSISTANT: Kindly share your source?

USER: My source airport code is Washington, DC-IAD.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

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

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.