You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Samuel Thomas, planning to visit Washington to meet my friend. Can you please book me a ticket from MSP to IAD?

ASSISTANT: Sure, I will definitely help you in that one. Can you please help me in providing your journey dates?

USER: My preferable journey dates are from 07/25 to 07/27.

ASSISTANT: Ok, give me a moment to check the flight on your journey dates.

USER: Sure, take your own time.

ASSISTANT: Thank you for your patience and there is no flight for you to travel on the airport location that you have planned.

USER: Ok, not an issue. Thank you for providing information.

ASSISTANT: It's my pleasure and have a nice day.