You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: Charles Johnson here.

ASSISTANT: Nice to meet you.

USER: Can you book a ticket from OAK to ORD, to meet my mother on her birthday.

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

USER: Sure, my dates should be 07/15 and 07/17.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with price 200 and the connections 1 is available. Shall I confirm your ticket?

USER: Please proceed. Ok, thanks for your help.

ASSISTANT: Your ticket is booked. The flight number is 1015 and the airline is Delta. Welcome, have  agreat day.