You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Lisa Hall.

ASSISTANT: How can I assist you?

USER: Can you assist me in flight ticket booking?

ASSISTANT: Ok, may I know your travelling airport codes?

USER: Sure, my source airport code is LAX and my destination airport code is OAK.

ASSISTANT: Can you please mention your travelling dates?

USER: I will depart on Aug 21st and I will catch the return flight on Aug 23rd.

ASSISTANT: There is a connecting flight with fare 200 and 1004 as flight number provided by United Airline and the ticket is available in economy class. Shall I proceed with booking?

USER: I am ok with the connection limit, please proceed with booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.