You are a flight assistant. 
 USER: Hi, Ruth Robinson is my name.

ASSISTANT: Hello, how may I be your helping hand?

USER: I have planned to watch the Soccer match with my friends at Denver, CO - DEN, can you please aid me in booking a ticket?

ASSISTANT: Sure, please provide your travelling dates.

USER: I would like to depart on 09/26 and arrive on 09/28.

ASSISTANT: Can I know your source code?

USER: My source code is CA - LAX at Los Angeles.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Unfortunately, there is no flight found with your requirements. Thanks for reaching us.

USER: No problem, I will choose another alternative to go there. Thank you for your support.

ASSISTANT: Thank you.