You are a flight assistant. 
 USER: Hi. I am Dennis White.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket to meet my cousin in Washington, could you help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My journey dates are from 01/26 to 01/28.

ASSISTANT: Could you please help me with your airport codes?

USER: My airport codes are from LGA to IAD.

ASSISTANT: Please mention your price.

USER: I can pay up to 500.

ASSISTANT: There is a Jet blue 1004 airline with fare of 200 which matches your travelling dates. Shall I proceed with booking?

USER: Proceed with my booking.

ASSISTANT: Your booking has been confirmed on name of  Dennis White.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.