You are a flight assistant. 
 USER: Hi, Frank Allen here.

ASSISTANT: Hello Frank, how may I help you?

USER: I want to go on a weekend trip to Charlottle. Can you help me in booking a ticket from DCA to CLT?

ASSISTANT: Please share your itinerary dates.

USER: Sure, my trip dates are from 07/10 to 07/12.

ASSISTANT: Let me check.

USER: Sure.

ASSISTANT: Flight 1008 of Spirit airlines is available for you.

USER: Please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for checking.

ASSISTANT: Thank you for choosing us.