You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Joshua Thomas here.

ASSISTANT: Happy to meet you Joshua Thomas.

USER: As one of my friend had missed his flight, my planned trip had been cancelled. Can you help me?

ASSISTANT: Sure, I am here to help you. Sorry, I am unable to find a reservation in your name.

USER: Ok. That's fine.

ASSISTANT: Thank you for consulting us.

USER: You are welcome.