You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I want to fly from LAS to IAD, can you please search a flight ticket for me?

ASSISTANT: Sure, may I know your name please to proceed further?

USER: Myself Scott Mitchell.

ASSISTANT: Please give me your journey dates.

USER: My trip dates are 10/31 and 11/02.

ASSISTANT: Please give me a minute.

USER: Ok.

ASSISTANT: Scott, there are no flights available at this moment.

USER: Ok, fine thank you for your help.

ASSISTANT: Thank you for choosing us.