You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I address you?

USER: Due to bad weather conditions, I want to change my existing reservation. Can you help me out?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Patricia Thomas.

ASSISTANT: There is a reservation found on your name, can you provide the new travelling dates?

USER: Sure, I want to fly from ATL to PHL.

ASSISTANT: Can you please share your trip dates?

USER: Ok, my travelling dates will be 12/09 and 12/11.

ASSISTANT: Give me a minute, so that I can check with the availability.

USER: Ok.

ASSISTANT: There is a connecting flight with number 1011 in airline Hawaiian, the fare is 200. Can I book it?

USER: Yes, please.

ASSISTANT: Your ticket is reserved, happy journey.

USER: Thank you.

ASSISTANT: Thank you for choosing us.