You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you today?

USER: I am Brandon Anderson. Can you help me in booking me a flight on 07/08?

ASSISTANT: Sure, please share me your source and destination codes.

USER: As there is a Pet dog competition in Washington, I am planning to take my pet to there from Houston,IAH. My destination code is IAD.

ASSISTANT: May I know your return date?

USER: I will return on 07/10.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Ok, I will choose other airline.

ASSISTANT: Thank you for reaching us.

USER: Thank you for assisting me.