You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: Myself David Nelson.

ASSISTANT: How can I help you?

USER: I am business tycoon, so I want to visit Houston this week. Can you please help me in booking the ticket from LGA to IAH?

ASSISTANT: Please let me know your travel dates?

USER: I will drop-off 02/29 and again I will retrieve on 03/02.

ASSISTANT: Connecting flight can be booked with airline Frontier for price 400.

USER: Sure, please proceed with that.

ASSISTANT: Ticket is booked with flight number 1021.

USER: Thank you very much for reserving the ticket.

ASSISTANT: Thank you.