
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
A person walked across Westminster Bridge in the morning, sometime between 8 and 9 o'clock, according to the tower clock. Returning between 4 and 5 o'clock, they noticed that the clock hands had swapped places. At what times did the person walk across the bridge in the morning and when did they return?

Present the answer in LaTex format: \boxed{Your answer}
user