You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Catherine Harris.

ASSISTANT: How may I assist you today?

USER: I want to book a flight ticket to Phoenix AZ-PHX, can you help me in booking my flight ticket from Las Vegas NV-LAS.

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your depart date?

USER: My depart date is on 05/09.

ASSISTANT: Which class would you prefer for your journey?

USER: I am comfortable with any class.

ASSISTANT: Let me know your return date to proceed further.

USER: I will catch my return flight on 05/11.

ASSISTANT: Please, wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight available with single connection and fare 100 in economy class of UA airline. Shall I reserve this flight for your journey?

USER: You can proceed.

ASSISTANT: Your reservation has been confirmed with flight number 1006.

USER: Thank you.

ASSISTANT: Thank you.