You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Alexander Martin.

ASSISTANT: How may I help you?

USER: I would like to travel from ATL to SEA for a meeting, could you help me out?

ASSISTANT: Sure, please share your travel dates.

USER: My preferable dates are from 06/21 to 06/23.

ASSISTANT: Sorry, I did not find any flight for the given schedule.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you for reaching us.