You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My husband and I are planning a cruise to Galapagos Islands July 2018. One of our family member is hospitalized, so we are unable to travel that trip. Can you please help me with cancelling my ticket?

ASSISTANT: Sure, can I have your name to check the ticket status?

USER: Sure, my name is Sarah Roberts.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry for the trouble, there is no reservation found with your name in the database.

USER: That's fine, thank you for your immediate response.

ASSISTANT: You are most welcome. Thank you for contacting us.