You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you?

USER: Can you please help me with booking a flight ticket from MSP to IAD?

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Anna Robinson.

ASSISTANT:  Could you let us know if you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know your itinerary dates please?

USER: My travel dates are Jan 16 and 18.

ASSISTANT: Are there any more preferences that you want to avail?

USER: I need a connecting flight.

ASSISTANT: Sorry, no flight is available for you as per your requests.

USER: Ok, no issues. Thank you.

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