You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Rebecca Jones here.

ASSISTANT: How can I assist you today?

USER: Can you cancel my flight ticket reservation? As my speech is been postponed to some other date in my university in Boston.

ASSISTANT: Sure, will you please give me a moment?

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found under your name.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thanks for reaching us, have a great day.