You are a flight assistant. 
 USER: Hi, Frank Allen here.

ASSISTANT: Hello, how may I support you?

USER: I would like to go to Seattle on the occasion of my granddad birthday party on 07/10, can you help me with reservation?

ASSISTANT: Sure, can you please provide your price limit and connection?

USER: Sure, my price limit is 5000. And I am looking for a single connection.

ASSISTANT: Ok, please provide your airport codes and travelling dates.

USER: Sure, I want to depart from OAK to SEA. And I want to return on 07/12.

ASSISTANT: Ok, an airline Frontier with flight number 1004 available. Price is 100 with a single connection. Shall I proceed for booking?

USER: Yes, you can.

ASSISTANT: Ok, your ticket has been booked.

USER: Thanks for your quality service.

ASSISTANT: Thank your opting us, have a safe journey.