You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my reservation due to some problems I am not unable to travel those dates, can you please change my travel dates?

ASSISTANT: May I know your name?

USER: Sure, my name is Margaret Lopez.

ASSISTANT: I have found your reservation, can you provide your travelling dates?

USER: That's great, I want to departure on 09/19 and please book my return ticket also on 09/21.

ASSISTANT: May I know your airport locations along with codes?

USER: I want to fly from CLT and destination airport is SEA.

ASSISTANT: There is a flight with number 1004 and connections are 2. Can I book it?

USER: But I want 1 connection limit, can you please recheck once again?

ASSISTANT: Sorry, there is no connecting flight on your requested dates.

USER: Oh! It's ok no problem, I will go with another airline service.

ASSISTANT: Thank you for picking us.

USER: Thank you for your information.