You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me book a connecting flight on the name of Mark Moore?

ASSISTANT: Sure, kindly mention your price limit?

USER: It should be within 500.

ASSISTANT: Could provide me your airport codes?

USER: My source is HOU and destination BOS.

ASSISTANT: May I know your travel dates?

USER: My journey is on 12/27 and 12/29.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

USER: Ok, thank you for your help.

ASSISTANT: Thanks for reaching us, have a good day.