You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Mark Wilson here.

ASSISTANT: How can I aid you today?

USER: Can you please help me in booing my flight from SEA to reach DCA?

ASSISTANT: Can you share your travelling dates?

USER: Sure, my planned travel dates are Aug 14th and 16th.

ASSISTANT: Do you need any connection limit?

USER: No.

ASSISTANT: If you have any specifications let me know?

USER: I must return in the evening.

ASSISTANT: There is a flight with Frontier airlines in economy class and ticket fare of 300. Can I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket is reserved with flight 1001.

USER: Thank you for the help.

ASSISTANT: Thank you for choosing us.