Hi.
user
Hello, how may I aid you?
assistant
 I want to book a ticket from DFW to LGA to meet my uncle, can you help me?
user
Sure, I am mirthful to help you out. Please provide me your trip dates.
assistant
Sure, I want to fly on 01/20 and back on 01/22.
user
May I know your name to proceed further?
assistant
My name is Nicholas Evans.
user
Sorry, there is no flight in your route.
assistant
Ok, not an issue. Thank you for helping me.
user
Thank you for reaching us.
assistant