You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Frank Martin.

ASSISTANT: How can I help you?

USER: I am looking for a flight from SFO to DCA, can you help me in booking the flight ticket from San Francisco?

ASSISTANT: Frank Martin, I am willing to help you for this. When would you like to travel?

USER: Sure, may I know your planned travel dates are May 31 and June 02.

ASSISTANT: Do you have any airlines prefernces?

USER: No.

ASSISTANT: As per your data, there is a flight with United airlines and the ticket fare is 100. Would you like me to make the booking now?

USER: Ok, please book the flight.

ASSISTANT: Your ticket is reserved in economy class with the flight-1003, and your departure time is 4:00 am and your arrival time is 9:00 am.

USER: Thank you for assisting me.

ASSISTANT: Thank you very much for reaching our agency.