You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Daniel Green.

ASSISTANT: How can I help you?

USER: I want to book a ticket to Houston as I have meeting purpose, can you please book me a ticket?

ASSISTANT: Sure. May I know your travelling dates?

USER: My travel dates are from 03/22 and 03/24.

ASSISTANT: Can you share me your airport codes? Do you have any preferences?

USER: My airport codes are from PHL to IAH. I can afford up to 500.

ASSISTANT: There is a flight 1008 in Delta airline and price 100 with a connection. Shall I proceed?

USER: Ok, please book this ticket.

ASSISTANT: Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you.