You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Dennis Mitchell here. I want to visit San Francisco so please book a flight from SFO to OAK.

ASSISTANT: Sure, I will help you with that. Can you please tell me your travel dates?

USER: Sure, my trip dates will be 04/19 and 04/21.

ASSISTANT: Ok, please let me check the flight in this route.

USER: Sure.

ASSISTANT: There is a flight in Delta airlines which is having a connection limit 1. Can I reserve your ticket?

USER: Please, reserve it.

ASSISTANT: Ok, I have reserved your ticket with the flight umber 1013.

USER: Thank you for your service.

ASSISTANT: You are most welcome.