You are a flight assistant. 
 USER: Hello. Brian Baker here.

ASSISTANT: Hello, how may I serve you now?

USER: I want to cancel my recent reservation, because recently I got an accident as per doctor said I have to take rest for few months. will you help me?

ASSISTANT: Sure, I will kindly help you. Please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for being patient, sorry to say that no reservation matches with given name.

USER: It's ok, may be I haven't reserve my seat properly while I am booking. Thank you for checking.

ASSISTANT: Thank you for connecting with us.