You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I want to alter my existing reservation because my project work is not yet completed. Can you help me?

ASSISTANT: Sure, I will help you. May I know your good name?

USER: My name is Katherine Anderson.

ASSISTANT: Can I know your new trip details?

USER: Sure, my trip dates are 08/11 and 08/13.

ASSISTANT: What is your source and destination airport codes?

USER: My airport codes are PHL and SFO.

ASSISTANT: Please give me a minute.

USER: Sure.

ASSISTANT: There is a flight available with 2 connection. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is booed in 1020 flight.

USER: Thank you for your help.

ASSISTANT: Most welcome.