You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what service do you require from our agency?

USER: I am planning to visit a Twin Peaks in San Francisco. Can you reserve a ticket?

ASSISTANT: Sure, I am glad to help you. Could you please help me with the airport codes to check the flights?

USER: Sure, my origin code is IAH and the destination code is SFO.

ASSISTANT: Ok, when you are willing to travel?

USER: Ok, my travelling dates are 03/11 to 03/13.

ASSISTANT: Ok, can  you please tell me your full name?

USER: Ok, my name is Timothy Wright.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I want the flight with 1 connection.

ASSISTANT: Ok Wright, the Southwest airlines is available from IAH to SFO. Shall I proceed to book your ticket?

USER: Yes, you can book the ticket.

ASSISTANT: Ok, your ticket is confirmed to the flight number 1021. Have a safe journey.

USER: Thank so much for your help.

ASSISTANT: You are welcome. Thank you for reaching us.

USER: Welcome.