You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I am Samantha Anderson. I would like to visit Denver. Will you help me in flight booking from DCA to DEN.

ASSISTANT: Can you please mention your preferable dates?

USER: My journey dates are from 10/12 to 10/14.

ASSISTANT: Here is a flight with fare 100 and UA as airline, shall I proceed?

USER: I am fine with those, please proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.