You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, thank you for visiting our site. How may I help you?

USER: Please help me to book a flight ticket from LAS to attend a client meeting in PHX.

ASSISTANT: I am glad to help you with your concern. Sure, can you please share your trip dates?

USER: 08/20 and 08/22 are my planned travelling dates.

ASSISTANT: Would you like to fly with connecting flight or direct flight?

USER: I need a connecting flight for this time.

ASSISTANT: Are you comfortable with normal cost airline or do you have any airline preference?

USER: No more specifications for this trip.

ASSISTANT: Are you looking for business class or economy class preference?

USER: No.

ASSISTANT: Do you have any specific time concern for return and depart journey?

USER: I am Sandra Wright.No more specifications, I already mentioned above.

ASSISTANT: Thank you for confirming all the necessary details, Sandra Wright. To check with the availability of flights, I request you to please be hold on for few minutes.

USER: Sure. Make it fast.

ASSISTANT: Thank you for waiting, Sandra Wright. Sorry for the inconvenience, as per your request there is no flight available for the mentioned dates.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for reaching our service.