You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Garcia.

ASSISTANT: How can I help you.

USER: Can you help me in booking from DCA to SEA?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are 05/25 to 05/27.

ASSISTANT: May I know your price limit?

USER: I can spend up to 200.

ASSISTANT: There is a UA 1007 with fare of 100 which matches your requirements. Shall I proceed?

USER: You can book it.

ASSISTANT: Your booking has been confirmed on name of Barbara Garcia.

USER: Thank you.

ASSISTANT: Thank you for approaching us.