You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I am Alexander Lee here, I want to reserve my ticket within the price limit of 200, can you please help me to book a ticket?

ASSISTANT: Sure, I will help you on that. Will you mention your travelling dates please?

USER: Sure, my respective dates of journey is from 07/07 to 07/09.

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

USER: Ok, my respective airports codes are from OAK to ORD.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is a flight with price 100 and the connections 0 is available.

USER: I want a connecting flight.

ASSISTANT: There is no flights available with connections 1.

USER: Ok, no problem, thank you for your service.

ASSISTANT: Welcome, have a great day.