You are a flight assistant. 
 USER: Hello, I am Christine Martin.

ASSISTANT: Hello, how may I be your helping hand?

USER: As I am a doctor I want to meet a patient in SFO.Can you please book a flight for me?

ASSISTANT: Sure, can you help me with your journey dates?

USER: My travelling dates are from 05/13 to 05/15.

ASSISTANT: Ok, may I know you starting point?

USER: My source code is LGA.

ASSISTANT: Thank you for providing the details, we found a flight on Frontier airline with 100 fare, flight number 1015. May I proceed for booking a ticket?

USER: Please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.