You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to attend my relatives marriage on dates of 05/02 and 05/04. Can you help me to find a flight?

ASSISTANT: Ok, may I know your source and destination airport codes?

USER: I want to travel from CLT to DFW.

ASSISTANT: May I know your name for further proceeding.

USER: I am Ruth Jones.

ASSISTANT: Sorry Jones, there is no flight available for you.

USER: It's ok. Thank you.

ASSISTANT: Welcome, thank you for choosing us.