You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your name please?

USER: I am Sharon Evans.

ASSISTANT: How may I guide you today, Evans?

USER: I want to attend a business meeting in Houston. Can you help me to book a flight ticket?

ASSISTANT: I would be happy to help you with that.

USER: Thank you.

ASSISTANT: Could you please provide your preferable travelling dates?

USER: I want to depart on 08/02 and return by 08/04.

ASSISTANT: From which location that you are preferring to start and where is your landing region?

USER: My source airport code is PHX and destination airport code is HOU.

ASSISTANT: Do you have any specifications?

USER: I am looking for a direct flight.

ASSISTANT: Please wait for a while, I will get back your flight details.

USER: Sure, I will stand by.

ASSISTANT: Sharon Evans, I am sorry to say that there is no flight found under your details.

USER: No issue, thank you for checking.

ASSISTANT: Thank you for contacting us. Have a great day.