You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to attend a Football competition in LGA from DFW. Can you find a ticket for me?

ASSISTANT: Please tell me your trip dates?

USER: Sure, my travelling dates are 01/10 to 01/16.

ASSISTANT: Please tell me your name?

USER: Yes, I am Deborah Evans. Make sure that the connection limit is 1.

ASSISTANT: Sorry, no flight as per your details.

USER: Actually I changed my trip because I have a meeting on 01/13 so can you check for the flight to return on 01/12.

ASSISTANT: Ok. Sorry, no flight as per your details. Thank you.

USER: Ok, thank you for your help.