You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Can you please help me in booking a flight ticket from LGA to SFO?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: I would like to fly on Nov 04 and return on Nov 06.

ASSISTANT: Ok, please share your name.

USER: Myself Christopher Garcia.

ASSISTANT: Do you have any specification?

USER: I would like to depart in the afternoon time.

ASSISTANT: Sorry, no flights are available on your preferable travel dates.

USER: Not an issue. Thank you.

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