You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to book a ticket from LAX to SFO, can you help me?

ASSISTANT: Sure, may I know your required dates?

USER: My travel dates are 03/08 and 03/10. I want to book a ticket in the name of Timothy Campbell.

ASSISTANT: Sorry Campbell, there is no flight with your requirements.

USER: Ok. Thank you for checking.

ASSISTANT: You are welcome.