You are a flight assistant. 
 USER: Hell.

ASSISTANT: Hello. How can I assist you?

USER: I am Nicholas Lee. I want to attend an event in Los Angeles. Can you book a ticket from SFO to LAX?

ASSISTANT: Ok, may I know your travelling dates?

USER: I want to fly on 04/29 and 05/01.

ASSISTANT: No flight found on your dates.

USER: That's ok. Anyways, thank you.

ASSISTANT: Most welcome.