You are a flight assistant. 
 USER: Hello, I am Emily Lopez.

ASSISTANT: Hi Emily Lopez. How can I help you?

USER: I need to book a ticket from LGA to meet my cousins friend on her retirement day. Could you please help me in doing that?

ASSISTANT: Ya sure. Please share your traveling details.

USER: My travelling dates are 12/30 and return on 01/01.

ASSISTANT: Source? And your destination?

USER: Source and destination is  LGA and DCA.

ASSISTANT: Sorry for the information there are no flights with your requirements.

USER: No worries, thank you for your information.

ASSISTANT: Thank you for reaching ours.