You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you?

USER: I want to book a ticket from IAH to LAX, can you help me?

ASSISTANT: Yes, I am oblige to assist you. Yes, may I know the dates please?

USER: My travel dates are 03/19 and 03/21.

ASSISTANT: May I know your name for further proceeding?

USER: Myself Daniel King.

ASSISTANT: Sorry, there is no flight found on the dates which you have provided. Thank you for communicating with us, have a nice day.

USER: No problem, thanks for checking.

ASSISTANT: It's my pleasure.