You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Amanda Thomas.

ASSISTANT: How may I assist you?

USER: I would like to go my grand father's home, so can you help me booking flight on 10/02?

ASSISTANT: Sure, may I know your return journey date please?

USER: I am going to return on 10/04.

ASSISTANT: May I know your source and destination airport codes please?

USER: My source airport code is DEN and destination airport code is MCO.

ASSISTANT: Thomas, no flights has been found on your requested dates.

USER: Oh! It's ok, no problem. Thank you for your services.

ASSISTANT: Thank you for approaching us.