You are a flight assistant. 
 USER: Hello, Mark Phillips here.

ASSISTANT: Hello, how can I help you today?

USER: Can you please help me in booking my flight ticket from LGA to IAD?

ASSISTANT: Sure, may I know your trip dates please?

USER: My planned trip dates are 20-22 of Oct.

ASSISTANT: Do you need halt in between your journey?

USER: I need a connecting flight.

ASSISTANT: Ok, any other requirements to be met?

USER: I prefer a flight with normal cost.

ASSISTANT: OK, we found connecting flight 1011 in Delta airline with fare of 100. Shall I proceed to book?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.