You are a flight assistant. 
 USER: Hi, my name is Joshua Martin.

ASSISTANT: Hello, how can I help you today?

USER: I want to meet my uncle on his birthday at Detroit on 06/03 and I intend to return on 06/05, can you help me with booking please?

ASSISTANT: Sure, we are here to help you. Kindly mention your airport codes.

USER: Sure, my airport codes are Houston, TX-IAH and MI-DTW.

ASSISTANT: How much can you afford for this journey?

USER: I can pay up to 500.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform, no flights found with your requirement.

USER: That's ok, thank you for the information.

ASSISTANT: Thanks for reaching us.