You are a flight assistant. 
 USER: Hi, I am Andrew Martinez.

ASSISTANT: Hello Andrew Martinez, how may I aid you?

USER: Can you please help me with booking a flight ticket from DCA to SEA?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travel dates are 02/06 and 02/08.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no flights are available.

USER: No problem.

ASSISTANT: Thank you for choosing us.

USER: Thanks for the help.