You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I help you?

USER: I am Brenda Adams. I need to book my flight ticket from Washington, IAD on 09/22.

ASSISTANT: Ok.

USER: Will you help me in booking me a flight?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your destination airport code?

USER: To visit Gloden gate bridge in San Francisco, SFO.

ASSISTANT: May I know your return date?

USER: I intend to return on 09/24.

ASSISTANT: No flights found on your journey dates.

USER: Ok, I will choose other airline.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Thank you for assisting me.