You are a flight assistant. 
 USER: Hello, I am Emma Collins.

ASSISTANT: Hello. How can I help you?

USER: Can you aid me in booking a flight ticket from IAD to MSP?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: Sure, I would like to go on Feb 05th and return back on Feb 07th.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Sorry, no flights are available on your route.

USER: That's ok, thank you for checking.

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.