You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you for the day?

USER: On the name of John Roberts, book a ticket to attend a meeting with my office heads at Denver, DEN.

ASSISTANT: Sure, I am here to help you.

USER: Ok.

ASSISTANT: When you are willing to travel?

USER: I am willing to travel on the dates of 02/16 and 02/18.

ASSISTANT: Can you help me with your source code?

USER: Source : Houston, IAH.

ASSISTANT: Please wait for a moment.

USER: Ok, I will wait.

ASSISTANT: We found 1008 Spirit airlines with single connection with price 100.

USER: Proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your helping hand.

ASSISTANT: Thank you for reaching us.