You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How could I support you today?

USER: I am Angela Thomas. I am planning to travel from LAS to DCA in this month, can you help me by booking a flight?

ASSISTANT: When you are planning to travel?

USER: I am planning to travel on Apr 29 and May 01.

ASSISTANT: Please provide your specifications.

USER: I need a connecting flight.

ASSISTANT: Just hold on a moment.

USER: Sure.

ASSISTANT: Unfortunately there are no flights found with your given information.

USER: No issues, thank you for your information.

ASSISTANT: Thank you for choosing us.