You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me in booking a flight ticket from SEA to LAS?

ASSISTANT: Sure, may I know your travelling dates?

USER: I want to travel on 12/29, and return on 12/31.

ASSISTANT: On which name shall I reserve flight ticket?

USER: I am Brenda Williams.

ASSISTANT: Do you need any specifications?

USER: I need a direct flight.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT:  Sorry, there are no flights found on given dates.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the information.