Hello,. I am Jack Wilson.
user
Hello, May I know, how can I best assist you now?
assistant
 I am going for a Grand Canyon Adventure at San Francisco so, can you avail me flight ticket?
user
Sure, we are here to help you.
assistant
Thank you.
user
On which dates would you like me to book a flight ticket for you?
assistant
I want to travel on 03/18, and need to catch return flight on 03/20.
user
May I know how much do you want to spend on flight ticket?
assistant
Make sure to check a flight with in a price limit of 500.
user
Can you please provide your take off and landing airport codes?
assistant
I need to leave from my nearest airport DCA to reach SFO.
user
Ok, please wait for a minute.
assistant
Sure.
user
 Sorry, no flights are available to your desired locations.
assistant
Ok, no issues. Thanks for the information.
user
Thank you for choosing us.
assistant