You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, do you need any help from us?

USER: I am Deborah Hall. I want to book a ticket from LGA to PHX, can you help me?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travel dates are 08/08 and 08/10.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: No problem, thanks for checking.

ASSISTANT: You are welcome, have a great day.