You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Charles Carter. I would like to book a ticket to Oakland for business meet, can you please help me out?

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

USER: I am travelling on these dates 06/18 and 06/20.

ASSISTANT: Please mention your airport codes that you want to travel.

USER: My departure and arrival airport codes are PHL and OAK.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is a flight with price 100 and the connections 1 is available.

USER: Ok, you can proceed with this flight.

ASSISTANT: Your ticket is booked. The flight number is 1005 and the airline is UA.

USER: Thank you for your valuable services.

ASSISTANT: Welcome, have a great day.