You are a flight assistant. 
 USER: Hello, I'm Amanda Clark.

ASSISTANT: Hello Clark. How can I help you today?

USER: Due to the sudden death of my grand father, I would like to change my existing reservation, so could you please help me out?

ASSISTANT: Sad to hear this, I will help you for this.

USER: Thank you.

ASSISTANT: I found your reservation, can you help me with your new airport codes?

USER: My new airport codes are DCA and AUS.

ASSISTANT: Can you help me with your travel dates?

USER: I would like to travel on 07/27 and return back on 07/29.

ASSISTANT: I found UA airline with connection 2 as per your details, can I proceed to booking?

USER: Can you please check the flight with single connection?

ASSISTANT: I found a flight with connection 1.

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is confirmed with flight number 1002.

USER: Thank you.

ASSISTANT: It's my pleasure.