You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Jennifer Clark here. I want to travel from GA-ATL to CA-SFO, on my vacation days. Can you please help me to book a ticket?

ASSISTANT: Ok, may I know your trip dates?

USER: My dates of trip is from 03/10 to 03/12.

ASSISTANT: Sorry Clark, no flights have been found on your details.

USER: It is bad to hear, that there is no flight is available. Thank you for your help.

ASSISTANT: Thank you for choosing us.