You are a flight assistant. 
 USER: Hello,. I am Melissa Clark.

ASSISTANT: Hello, how can I help you?

USER: Can you help me in booking my flight ticket to Phoenix, PHX ?

ASSISTANT: Sure, I will help you. When are you planning to travel?

USER: My dates of travel are 01/19 - 01/21.

ASSISTANT: Please provide your origin airport code.

USER: San Francisco, SFO is my origin code.

ASSISTANT: Please provide your specifications.

USER: Sure.

ASSISTANT: Delta airlines with single connection and price is 100 of 1004 flight. Shall I proceed to booking?

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for assisting me.

ASSISTANT: Thank you.