You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: This is Jerry Phillips.

ASSISTANT: How may I help you?

USER: Assist me in booking flight ticket on 05/12, to reach Washington, DCA. Can you help me in that?

ASSISTANT: May I know your source airport code?

USER: LAS, Las Vegas is my source airport.

ASSISTANT: Please help me with your arrival date.

USER: I will arrive on 05/14.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 600 with flight number 1019. Shall I proceed with this flight?

USER: I can bare only 200, to reach my destination. So, please do not proceed for booking.

ASSISTANT: Sorry for this inconvenience, I could not find any flight with your requirements.

USER: That's ok, Thanks for your kind information.

ASSISTANT: Thank you for reaching us.