You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I need a connecting flight to attend my nephew's marriage. Can you help me in booking a ticket to New York, LGA?

ASSISTANT: Sure, please provide me your travel dates.

USER: Sure, my travel dates are 03/11 to 03/13.

ASSISTANT: Can I have you airport codes?

USER: I will depart from Dallas, DFW.

ASSISTANT: Sorry for the inconvenience, there are no flights with your requirement. Can I know your name please?

USER: Ok, thanks for the information, I will check with other alternative. I am Rachel Robinson.

ASSISTANT: Thanks for choosing us.

USER: Ok.