You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid  you?

USER: I would like to meet my cousin at Chicago, please help me in booking a ticket.

ASSISTANT: That's nice, I will aid you. Could you please provide me your source and destination airport codes?

USER: My source and destination airport codes are OAK and ORD.

ASSISTANT: Can I have your good name for further process?

USER: My name is Brandon Clark.

ASSISTANT: Ok, in which dates you would like to travel?

USER: I would like to start my journey on 05/20 and return on 05/22.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Ok, I found a flight airlines UA with the connection limit 1. Are you fine with this flight?

USER: Ok, please book my ticket.

ASSISTANT: Sure, I have reserved your ticket with the ticket fare 100. The flight number is 1004.

USER: Thank you for your help.

ASSISTANT: You are welcome.