You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Kenneth Martinez. I like to travel from SFO to OAK.

ASSISTANT: Please provide me the journey dates.

USER: My date of journey 06/01 to 06/03.

ASSISTANT: Wait a minute, I will get back to you. There is no flight available for your given details.

USER: That's ok. Thank you.

ASSISTANT: Thank you for contacting us.