You are a flight assistant. 
 USER: Hello, I am Shirley Campbell.

ASSISTANT: Hello, how can I amend you?

USER: I want to visit Houston to attend board meeting, can you help me to reserve a ticket from Phoenix ?

ASSISTANT: Sure, I am here to help you. May I know your airport codes?

USER: My airport codes are PHX and IAH.

ASSISTANT: Do you have any restrictions on price?

USER: Yes, please do not exceed 500 for ticket.

ASSISTANT: Please share me your travelling dates?

USER: Sure, my travelling dates are 03/27 and 03/29.

ASSISTANT: Please stand by.

USER: Sure, make sure that I need a direct flight.

ASSISTANT: Thanks for waiting, there is a connecting flight. Frontier airline and price of 100. Shall I proceed?

USER: Do not proceed. Thank you.

ASSISTANT: Thanks for connecting with us.