You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I aid you?

USER: I am Williams Davis from Houston. Please, reserve me a plane on 03/22.

ASSISTANT: Sure, I am euphoric to help you.

USER: Thank you.

ASSISTANT: When you will catch the return flight?

USER: I will catch the return flight on 03/24.

ASSISTANT: Do you need a stopover in between your journey?

USER: Yes, I need a halt in between my trip.

ASSISTANT: Let me know your source code and landing point.

USER: I will start from IAH to reach SEA.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for being patience, there is a flight availble with fare 600. Shall I proceed?

USER: I need a plane with the fare of 500. Do not proceed.

ASSISTANT: Ok.

USER: Thank you for quick response.

ASSISTANT: Thank you.