You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Jacob Hall.

ASSISTANT: How may I help you today?

USER: Due to an emergency, I would like to cancel my recent reservation, so can you help me for this?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: I cancelled your reservation successfully under your name.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.