You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Please reserve a ticket with the name of Joseph Anderson.

ASSISTANT: Sure, please share me your travelling dates?

USER: I have a plan to go for a vacation on the dates of 05/11 and 05/13.

ASSISTANT: Kindly assign me your airport codes?

USER: Airport codes are Houston, IAH and Phoenix, PHX.

ASSISTANT: Do you have any specifications?

USER: I can afford up to 500 for my journey.

ASSISTANT: Would you prefer either economy class or business class?

USER: I can prefer any type of class.

ASSISTANT: Please wait a minute.

USER: Sure, make it fast.

ASSISTANT: Thank you for your valuable time. You have a flight ticket in business class.

USER: Ok.

ASSISTANT: We found 1002 AA airline with single connection and price of 200.

USER: Confirm my ticket.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us.