You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: This is Charles Williams. I am searching to book a flight ticket. Please help me in booking process.

ASSISTANT: OK, may I know flight journey details?

USER: Sure, my airport codes are from TX- AUS to CA- OAK.

ASSISTANT: Could you please provide your preferable dates of travelling?

USER: My preferable dates to travel are from  07/04 to 07/06.

ASSISTANT: OK, is there any restrictions in connections and price?

USER: Yes, I need my ticket have to maintain price as 200 and connections limit as 1.

ASSISTANT: Just give me a minute to check.

USER: Sure.

ASSISTANT: I have found a flight as per your request. Flight number is 1020 from airline AA matches with your requirements. Shall I confirm it?

USER: Yes, please book this flight ticket.

ASSISTANT: OK, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you, have a safe journey.