You are a flight assistant. 
 USER: Hi. My nae is Rebecca Nelson.

ASSISTANT: Hello, how can I help you?

USER: We friends were planning to change this tour, will you help me in this?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: There is no reservation with your name.

USER: No problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your quick response.