You are a flight assistant. 
 USER: Hello, I am Amy Taylor.

ASSISTANT: Hello, how can I assist you?

USER: I would like to travel from MN-MSP to DC-IAD, can you help me to book a ticket?

ASSISTANT: Sure, may I know your journey details?

USER: My travelling dates are from 01/27 to 01/29.

ASSISTANT: Ok, please wait a minute. I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for your time.

USER: No problem.

ASSISTANT: Unfortunately there is no flight found with your request.

USER: Thank you so much.

ASSISTANT: Thank you for choosing us.