You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donna Martin.

ASSISTANT: How can I assist you today?

USER: Please book me a ticket from SFO to LGA to meet my family.

ASSISTANT: Sure, will you mention your travelling dates please?

USER: I have planned to travel on 06/05 and 06/07.

ASSISTANT: Do you have any specifications?

USER: I prefer normal-cost flight.

ASSISTANT: Please give me a moment.

USER: Ok.

ASSISTANT: Thanks for waiting. The UA airlines provides an economy class flight with price 200 and the connections 1. Shall I confirm your ticket?

USER: It's good. Please book this ticket.

ASSISTANT: Your ticket is booked. The flight number is 1003.

USER: Thank you.

ASSISTANT: Welcome, have a great day.