You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I guide you?

USER: I am Larry Garcia, can you find a flight from DCA?

ASSISTANT: Sure, may I know your preferable dates of travelling?

USER: Yes. My planning dates are 03/20 and 03/22.

ASSISTANT: Ok, could you please provide your destination airport code for booking?

USER: My destination place is EWR.

ASSISTANT: Ok, please wait a moment to check the availability of flights.

USER: Sure.

ASSISTANT: Based on your details flight number 1003 from AA airlines is available for you. Shall I proceed with it?

USER: Yes, please.

ASSISTANT: Ok, your booking is completed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a safe journey.