You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I am Richard Wilson. Can you find a flight from PHX to OAK, to meet my parents.

ASSISTANT: Sure, could you please share me with your dates of travel?

USER: Sure, my trip dates are 07/27 and 07/29.

ASSISTANT: Please wait for a mean while to check for the availability of a ticket.

USER: Sure, take your time.

ASSISTANT: Sorry Wilson, there is no flight found as per your travelling details.

USER: It's ok, thanks for checking.

ASSISTANT: You are welcome and have a happy journey.